單項(xiàng)選擇題

When the power is shut off, the wire（）

A.becomes slack
B.can not be paid out unless the brake is overhauled or recover wire unless manually operated
C.will be let out because the brake is out of work
D.may be pay out due to no power

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單項(xiàng)選擇題

For a flash type evaporator, a demister is located the condenser（）

A.After
B.before
C.inside
D.outside

單項(xiàng)選擇題

For a flash type evaporator, the seawater heater will have to maintain a enough temperature to minimize scale formation（）

A.lower
B.higher
C.low
D.high

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