____ is not contained in the Admiralty Notices to Mariners. A. Amendments to Admiralty Sailing Directions B. Amendments to Admiralty List of Lights and Fog Signals C. Amendments to Admiralty List of Radio Signals D. Supplement （补充）to Guide to Port Entry（进港指南）

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The main objective of ISM Code is not ____.

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单选题

The normal chest x-ray seen below is not technically adequate. The reason is ____.

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Conceptual meaning is not ( )

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It is sunny today. Why not ____ out to take a walk?

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单选题

A vessel not under command has usually suffered a ____ ,which is not easy to predict or classify. A. probability B. disability C. possibility D. capability

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