The system of derricks and winches has been largely replaced on newer ships by cranes（）it is very efficient. -题库考试答案搜索网

The system of derricks and winches has been largely replaced on newer ships by cranes（）it is very efficient.

单选题

2022-01-06 01:13

A、when
B、because
C、unless
D、though

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正确答案

B

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标签：航海英语综合练习

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