When lightning is seen or thunder is heard, a crane operator should wait until there are no further signs of lightning for at least _____.

a. 10 minutes
b. 20 minutes
c. 30 minutes
d. 1 hour


c. 30 minutes

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Which exterior-use sealant has the highest movement capability and which sealant has the highest abrasion resistance?

What will be an ideal response?

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When servicing a vehicle with an air suspension system, the air suspension switch must be turned OFF:

A. When jacking the vehicle to change a tire B. When lifting the vehicle for any reason C. When performing services to the suspension system. D. All of the above

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If a square wave input produces 0 V output from an RC integrator, ________

A) the resistor is shorted B) the capacitor is open C) the capacitor is leaky D) the resistor is open

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Which of the following may be a sign of tire failure?

a. loud hissing noise. b. Gentle thumping . c. wheels fishtailing.

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