There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．

A、straits

B、channels

C、canals

D、roadsteads

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更多“There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．”相关的问题

第1题

[单选题] Line throwing apparatus aboard ship must contain（）.

A、two rockets，one of which shall be the buoyant type  B、three rockets，one of which shall be the buoyant type  C、four rockets，two of which shall be the buoyant type  D、five rockets，two of which shall be the buoyant type  

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第2题

[单选题] There shall be two principal（）through the harbor for the passage of vessels of over 60 tons burden.

A、straits  B、channels  C、canals  D、roadsteads  

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第3题

[单选题] During the day，a vessel picking up a submarine cable shall carry（）.

A、three shapes，the highest and lowest shall be red balls，and the middle shall be a white diamond  B、two black balls  C、three shapes; the highest and lowest shall be black balls，and the middle shall be a red diamond  D、three shapes; the highest and lowest shall be black balls and the middle shall be a black diamond  

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第4题

[] During the day，a vessel picking up a submarine cable shall carry（）.

A、A.Three shapes，the highest and lowest shall be red balls，and the middle shall be a white diamond  B、B.Two black balls  C、C.Three shapes；the highest and lowest shall be black balls，and the middle shall be a red diamond  D、D.Three shapes；the highest and lowest shall be black balls and the middle shall be a black diamond  

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第5题

[单选题] Which of the following conditions must exist for heat to flow from one object to another?（）

A、The two objects must be in physical contact  B、The two objects must be the same size  C、There must be an existing temperature differential  D、There must be an existing weight differential  