What（）(航速)?

What kind of （）can be used for gas and chemical fires?

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WHAT IS YOUR PRESENT COURSE AND SPEED?的中文意思是：你船现在的航向及航速是多少？

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WHAT IS YOUR PRESENT COURSE AND SPEED?的中文意思是：你船现在的航向及航速是多少？

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（）fore and aft decks and prepare for sea.

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Rig the lifeboat ladder and safety net and report.（）

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Put on （）(艇底塞) and hand the fender and the buoy.

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（）are for radiators and pipes and for the ship’s funnel.

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Put in boat plug and hand the fender and the puoy.（）

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（）(耐热漆) are for radiators and pipes and for the ship’s funnel.

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