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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶辅助机械

单项选择题

The inner part of the condenser should be cleaned with （）.

A.gas oil
B.diesel oil
C.chemical compound
D.Freon-12

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单项选择题

In the cargo winch, spur reduction gearing transfers the motor drive to （）.

A.the toping light
B.the board brake
C.the fail-safe
D.the barrel shaft

单项选择题

For occasional heavy loads, two cranes can be arranged to work together. The operating （） for deck crane motors may be hydraulic electric.

A.principle
B.medium
C.instruction
D.voltage

单项选择题

In a general cargo crane, three principal movements are （）；（）；（）.

A.hoisting；luffing；slewing
B.lifting；raising；lowering
C.rotating；raising；handling
D.hosting；lowering；moving

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