正确答案: D

rigged in

题目：Vessels transiting the Canal must have their gangways and derricks ________

解析：D

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学习资料的答案和解析：

[单选题]机损事故分为________。

船员责任事故和非船员责任事故

[单选题]Compared to a constant pitch propeller, a controllable pitch propeller

more efficiently uses available engine power