正确答案: D
A+B+C
题目:船舶内部的通信系统,一般指的是()。
解析:D
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学习资料的答案和解析:
[单选题]双作用叶片泵叶片采用前倾角的主要目的是( )
改善叶片受力情况,以防卡阻
[单选题]In the Second paragraph, the underline word "Who", in such a context, stands for_____.
the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate
[单选题]下列船舶中________在作业所必需的限度内可免受通航制条款的约束。
B、C都是