單項(xiàng)選擇題

The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.

A.remain constant along the tubes length
B.be greatest in a single pass counter flow heat exchanger
C.remain constant throughout the heat exchanger
D.vary from section to section through out the heat exchanger

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單項(xiàng)選擇題

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.

A.a low load on the unit
B.a clogged pump suction strainer
C.a blockage in the line between the pump and hydraulic motor
D.the hydraulic motor turning too fast

單項(xiàng)選擇題

A salinity indicator is used to determine the （）.

A.cause of salt contamination
B.location of salt water contamination
C.chemical makeup of feed-water
D.level of alkalinity in condensate

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The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.

你可能感興趣的試題

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.

A salinity indicator is used to determine the （）.

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