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(航海日志)1105 拖船Satex系右首，按船长和引航员命令用车和拖船。

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船舶不得在分道通航制区域内抛锚。

Some of these shoals have been disproved and are not charted． Nevertheless mariners should

A. go
B. proceed
C. move
D. remove

Radar is not only to obtain ________ ，but also to measure their distances away from you．

A. brightness of objects
B. color of targets
C. shape of targets
D. bearings of objects

Of all the extinguishing agents listed below，which one has the greatest capacity for heat

A. Water fog
B. Carbon dioxide
C. Dry chemical
D. Solid stream of water