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Class A (other)
Class A may refer to: Communications technology * Class-A amplifier, a category of electronic amplifier * Class A network, in Internet technology, a type of large network * Class A television service, a system for regulating low power stations in the United States Sports * Class A (baseball), a level of American Minor League Baseball * Class A (classification), a Paralympic wheelchair fencing classification Transportation * Class A airfield, a type of World War II British military installation * Class A surface, in automotive design * Milwaukee Road class A, a class of steam locomotives * Norfolk and Western Railway class A, a class of steam locomotives * Class A, a type of commercial driver's license in the United States * Class A, an ICAO airspace class * Class A, a type of motorhome Other uses * ''Class A'' (novel), a 2004 ''CHERUB'' novel by Robert Muchamore * Class A drug, a classification of drugs controlled by the UK Misuse of Drugs Act * Class A office space, a Buildin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class-A Amplifier
In electronics, power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier's characteristics and performance. The classes are related to the time period that the active amplifier device is passing current, expressed as a fraction of the period of a signal waveform applied to the input. A class A amplifier is conducting through all the period of the signal; Class B only for one-half the input period, class C for much less than half the input period. A Class D amplifier operates its output device in a switching manner; the fraction of the time that the device is conducting is adjusted so a pulse-width modulation output is obtained from the stage. Additional letter classes are defined for special-purpose amplifiers, with additional active elements or particular power supply improvements; sometimes a new letter symbol is used by a manufacturer to promote its proprietary design. Power amplifier classes Pow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorhome
A motorhome (or motor coach) is a type of self-propelled recreational vehicle (RV) which offers mobile living accommodation. Features Motorhomes usually have sleeping spaces for two to eight people. Each sleeping space is either fixed or converted from another part of the motorhome's interior, usually a fold-out sofa. A kitchenette area contains cooking equipment. The type of equipment included differs depending on the motorhome make and model, but generally a kitchenette has a stovetop, oven, refrigerator, and sink. More luxury models may also provide a microwave. A small bathroom with a shower, sink and toilet is usually also located in the motorhome. On smaller motorhomes, the toilet may be of the "cassette toilet" type, which is a kind of portable toilet or container-based toilet. The toilet sometimes swivels to provide extra room and can be accessed from outside the motorhome for easy emptying. Larger motorhomes usually have a separate shower cubicle. A motorhome also h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firefighting Foam
Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902.Loran and the fire extinguisher at p-lab.org The s used must produce foam in concentrations of less than 1%. Other components of fire-retardant foams are organic s (e.g., trimethyl- trimethylene glycol and [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Army Service Uniform
The Army Service Uniform (ASU) is a military uniform worn by United States Army personnel in situations where formal dress is called for. It can be worn at most public and official functions. Over history, a number of different non-combat service uniforms have been authorized by the Army, often with different varieties in use simultaneously depending on the social occasion or weather conditions. As of 2021, the Army has two service uniforms for use by its personnel. The Army Green Service Uniform, announced in 2018 and authorized in 2020, is used primarily for daily use and for situations where civilians wear business attire. The Army Blue Service Uniform, which was the sole service uniform between 2015 and 2020, is used primarily for ceremonial or formal social situations. In combat situations, the Army Combat Uniform is used. History In the early days of the U.S. Army, the uniform worn in combat was essentially the same as that worn for everyday duties, as was the common prac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The ''spectral class'' of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters ''O'', ''B'', ''A'', ''F'', ''G'', ''K'', and ''M'', a sequence from the hottest (''O'' type) to the coolest (''M'' type). Each letter class is then subdivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class A -- General Works
Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differently from such group phenomena as "types" or "kinds" * Class (set theory), a collection of sets that can be unambiguously defined by a property that all its members share * Hazard class, a dangerous goods classification * Social class, the hierarchical arrangement of individuals in society, usually defined by wealth and occupation * Working class, can be defined by rank, income or collar Arts, entertainment, and media * "The Class" (song), 1959 Chubby Checker song *Character class in role-playing games and other genres *Class 95 (radio station), a Singaporean radio channel Films * ''Class'' (film), 1983 American film * ''The Class'' (2007 film), 2007 Estonian film * ''The Class'' (2008 film), 2008 film (''Entre les murs'') Television * ''Class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class A Office Space
An office is a space where an organization's employees perform administrative work in order to support and realize objects and goals of the organization. The word "office" may also denote a position within an organization with specific duties attached to it (see officer, office-holder, official); the latter is in fact an earlier usage, office as place originally referring to the location of one's duty. When used as an adjective, the term "office" may refer to business-related tasks. In law, a company or organization has offices in any place where it has an official presence, even if that presence consists of (for example) a storage silo rather than an establishment with desk-and- chair. An office is also an architectural and design phenomenon: ranging from a small office such as a bench in the corner of a small business of extremely small size (see small office/home office), through entire floors of buildings, up to and including massive buildings dedicated entirely to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class A Drug
These drugs are known in the UK as ''controlled drugs'', because this is the term by which the act itself refers to them. In more general terms, however, many of these drugs are also controlled by the Medicines Act 1968, there are many other drugs which are controlled by the Medicines Act but not by the Misuse of Drugs Act, and some other drugs ( alcohol, for example) are controlled by other laws. The Misuse of Drugs Act sets out three separate categories, Class A, Class B, and Class C. Class A drugs represent those deemed most dangerous, and so carry the harshest punishments. Class C represents those thought to have the least capacity for harm, and so the Act demands more lenient punishment. In reality the potential harm has little bearing on the class, which has led to dissatisfaction with drug laws. Being found in possession of a drug on this list is dealt with less seriously than would be if it were deemed that there is intent to supply (even without payment) the drug to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class A (novel)
''Class A'', published as ''The Dealer'' in the United States, and as ''The Mission'' for 5000 prints, is the second book in the Robert Muchamore's novel series CHERUB. It continues the story of teenager James Adams and his fellow CHERUB agents as they try to bring down a drug gang led by Keith Moore. The book was originally to be called ''Drugs, Cars and Guns'', but this was changed so as to sound more appropriate for children. It received generally good reviews although not as many awards as its predecessor, ''The Recruit''. It is followed by ''Maximum Security''. It was released in the United Kingdom by Hodder Children's Books on 14 October 2004, and as ''The Dealer'' by Simon Pulse in the United States on 23 August 2011. Plot CHERUB agents James, Kerry, Kyle and Nicole are sent on a mission to infiltrate the drug gang KMG, led by criminal Keith Moore. The group attempts to befriend Moore's four children to attempt to gather evidence against KMG. James has the most success, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspace Class
The world's navigable airspace is divided into three-dimensional segments, each of which is assigned to a specific class. Most nations adhere to the classification specified by the International Civil Aviation Organization (ICAO) and described below, though they might use only some of the classes defined below, and significantly alter the exact rules and requirements. Similarly, individual nations may also designate special use airspace (SUA) with further rules for reasons of national security or safety. Abbreviations used in this article ICAO definitions On March 12, 1990, ICAO adopted the current airspace classification scheme. The classes are fundamentally defined in terms of flight rules and interactions between aircraft and air traffic control (ATC). Generally speaking, the ICAO airspaces allocate the responsibility for avoiding other aircraft, namely either to ATC (if separation is provided) or to the aircraft commander (if not). Some key concepts are: *Separation: Mai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class A Network
A classful network is an obsolete network addressing architecture used in the Internet from 1981 until the introduction of Classless Inter-Domain Routing (CIDR) in 1993. The method divides the IP address space for Internet Protocol version 4 (IPv4) into five address classes based on the leading four address bits. Classes A, B, and C provide unicast addresses for networks of three different network sizes. Class D is for multicast networking and the class E address range is reserved for future or experimental purposes. Since its discontinuation, remnants of classful network concepts have remained in practice only in limited scope in the default configuration parameters of some network software and hardware components, most notably in the default configuration of subnet masks. Background In the original address definition, the most significant eight bits of the 32-bit IPv4 address was the ''network number'' field which specified the particular network a host was attached to. The re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Driver's Licenses In The United States
In the United States, driver's licenses are issued by each individual state, territory, and the District of Columbia rather than by the federal government due to federalism. Drivers are normally required to obtain a license from their state of residence and all states recognize each other's licenses for non-resident age requirements. There are also licenses for motorcycle use. Generally, a minimum age of 16 is required to obtain a driver's or motorcycle license, and 18 for a commercial driver's license which is required for operating heavy size vehicles ( buses, trucks, tractor-trailers) or vehicles with at least 16 passengers or hazardous materials. A state may also suspend an individual's driving privilege within its borders for traffic violations. Many states share a common system of license classes, with some exceptions, e.g. commercial license classes are standardized by federal regulation at . Many driving permits and ID cards display small digits next to each data field. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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