单项选择题

The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim’s nostrils and（）.

A.Cupping a hand around the patient's mouth
B.Keeping the head elevated
C.Applying his mouth tightly over the victim's mouth
D.Holding the jaw down firmly

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The key to rescuing a man overboard is（）.

A.Good communication
B.A dedicated crew
C.Good equipment
D.Well-conducted drills

单项选择题

The indication of a slipping anchor is a（n）（）.

A.Decrease in mooring line length
B.Increase in the opposite amperage
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D.Decrease in mooring line tension and amperage

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The Coordinator Surface Search（CSS）in a SAR situation should display by night（）.

A.Deck lights forward and aft
B.A white light over two red lights
C.A red light，white light，and blue light in a vertical line
D.A distinctive signal promulgated by the CSS