If absolutely necessary，the best way to land on a beach in a motor lifeboat is to（）.

A、A.run as fast as the boat will go and keep the sea on the stern

B、B.secure the engine，put sea anchor over the bow，put out the oars，use sweep oar and back onto beach

C、C.go in under oars and put out the sea painter

D、D.put the sea broadside and let the boat drift ashore

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第1题

[单选题] In the constant-tension mooring, the mooring lines holding the ship to the pier will maintain a constant tension even with changes in tide or ship’s draft, （）.

A、without the necessity of manually adjusting the lines B、without the necessity of automatically adjusting the lines C、with the necessity of manually adjusting the lines D、with the un-necessity of automatically adjusting the lines

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第2题

[单选题] The declaration made by the shipper，if embodied in the bill of lading，is（）evidence，but is not binding or conclusive on the carrier.

A、absolute B、important C、decisive D、prima facie

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第3题

[单选题] The second stage feed-water temperature and shell absolute pressure in a multistage, flash type, distilling plant is （）

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第4题

[单选题] The amount of moisture in a given sample of air, when compared with the amount of moisture the air could hold if totally saturated at the existing temperature of the sample, is called （）.

A、absolute humidity B、specific humidity C、effective humidity D、relative humidity

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第5题

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A、A.absolute humidity B、B.relative humidity C、C.specific humidity D、D.total humidity

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第6题

[单选题] When air is at its dew point it is at its（）

A、lowest absolute humidity B、lowest relative humidity C、highest absolute humidity D、highest relative humidity