Which plant family does tobacco mosaic virus primarily infect?
a. rose family c. grass family
b. potato family d. legume family
B
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¿Cuál de los siguientes puede verse como un interruptor de CA?
a. Diac b. LED c. JFET d. SCR
The vent opening in a gable end is framed using a header, a sill, and _____.
a. trimmers b. king studs c. cripple studs d. gable jacks
If a source says “the internal energy of the methane is U = 100 J/mol,” which of the following is true?
A. In order to lower the temperature of the methane to absolute zero, you would have to remove 100 joules of heat from each mole of methane. B. In order to convert the methane from its current state to the reference state, 100 joules of heat would need to be added to each mole of methane. C. In order to convert the methane from its current state to the reference state, 100 moles of energy would need to be added to each mole of methane, but the energy added could take the form of either work or heat. D. 100 joules, divided by the number of molecules in one mole, equals the average kinetic energy of the methane molecules, but the kinetic energy of individual molecules vary widely. E. None of the above are true.
Two kinds of data selectors are ________ and ________
A) adders; subtractors B) comparators; registers C) encoders; decoders D) multiplexers; demultiplexers