What is TRUE when operating in fog and other vessels are detected by radar?().
A. You should make an ample change to port for a vessel crossing on the starboard bow
B. You should maneuver in ample time if a close-quarters situation is developing
C. You should determine the course and speed of all radar contacts at six minute intervals
D. Long-range scanning will provide early warning of ALL other vessels within the radar's range
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We have to point out that the postponement of the fulfilment of the contract()caused us certain expenses.
A. had
B. have
C. has
D. having
一般来讲,生态旅游环境容量理论推测法有两种类型:单项推测法和综合推测法。
A. 正确
B. 错误
信息帧是每个应答器的唯一标识
A. 正确
B. 错误
锅炉有效利用热量与()有关系
A. 烟气侧的传热
B. 烟气的流动阻力
C. 受热面积灰
D. 受热面磨损