很多船上在每个舱口处都有两个吊杆及两台起货机。（）<br>A:Many ships have two derricks at each hatch.<br>B:Many ships have two winches at each hatch.<br>C:Many ships have two derricks and two winches at each hatch.<br>D:Many ships have two derricks and two winches at each hatch cover.

很多船上在每个舱口处都有两个吊杆及两台起货机。（）
A:Many ships have two derricks at each hatch.
B:Many ships have two winches at each hatch.
C:Many ships have two derricks and two winches at each hatch.
D:Many ships have two derricks and two winches at each hatch cover.

出自：船舶水手证

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