Which statement concerning fuel cell technology is correct?
A. Hydrogen produces hydrochloric acid when burned.
B. The only byproduct of a fuel cell vehicle is water.
C. Fuel cell technology is ready to be deployed in a large scale.
D. Fuel cell technology is based on running hydrogen through a catalyst where an electron is added.
Answer: B
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Which of the following is true of penetrant inspection?
A. There are two types penetrants used: color contrast, and fluorescent. B. It is a form of destructive testing. C. It requires the use of an x-ray machine. D. Protective eyewear should be worn to prevent serious burns from the acid used.
What makes the main valve in the reversing valve shift from one side to the other?
A) Pressure difference from one side of the valve to the other B) A solenoid coil creates a magnetic field that pulls the valve to one end and repels it to the other C) An electronic stepper motor mounted on one end of the reversing valve D) A small gear motor that is operated on 24 volts engages gears on the back of the valve core
The successors of Augustus, who sprang from his own extended family, are called the
a. “Five Good Emperors.” b. Flavians. c. Nervan-Antonians. d. Julio-Claudians.
If you have been drinking alcohol, before you drive, you should ?
a. Wait for it to wear off b. Drink coffee c. Take a cold shower