We must grease and clean the derrick parts.（）

A、我们必须给吊杆部件上大黄油并清洗。

B、我们必须马上给吊杆部件上大黄油并清洗。

C、我们应该给吊杆上大黄油并清洗。

D、我们不用给吊杆部件上大黄油并清洗。

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更多“We must grease and clean the derrick parts.（）”相关的问题

第1题

[单选题] 我们必须仔细使用每件工具并且用完后归还。（）

A、We must use all kinds of tools carefully and return it after using. B、We must use every tool carefully and return it after using. C、A+B D、We must use everything carefully and keep it after using.

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第2题

[单选题] We are （）the cargo wire.

A、greasing B、greaseing C、greased D、greaser

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第3题

[单选题] In most pumps and pump motors overpacking the ball bearings full of grease will result in （）

A、moisture emulsification of the bearing grease B、insufficient circulation and overheating of the bearing C、proper grease circulation to cool the bearing D、sliding friction between balls and races