Newly placed conventional concrete must be kept moist for five to seven days so that it will _____.

a. cure
b. settle
c. mature
d. segregate


a. cure

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Technician A says that it is necessary to keep flat tappets in order if the old cam and lifters are to be used again. Technician B says that used roller tappets should not be installed on a new camshaft. Who is right?

A. Technician A only B. ?Technician B only C. Both A and B D. Neither A nor B

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When testing a tandem drive axle truck on a double roller chassis dynamometer, what is the maximum acceptable road speed differential between the two drive axles?

A. 5 mph (8 kph) B. 8 mph (12 kph) C. 12 mph (20 kph) D. 20 mph (32 kph)

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Large rooftop package AC units often use ________ to help draw in fresh air to meet code requirements and to cool if temperature and humidity permit

A) an economizer B) airflow C) enthalpy D) low pressure

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Leaders should never be drawn horizontally or vertically

Indicate whether the statement is true or false

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