stop your engines
sound the danger signal at two-minute intervals
hold course and speed until the other vessel is sighted
take avoiding action as soon as possible
第1题：
The fog is lifted，so ______ the radar．
A.close
B.open
C.switch off
D.switch on
第2题：
By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your radar plot shows this to be a meeting situation. You should ______.
A.turn to port
B.turn to starboard
C.maintain course and speed and sound the danger signal
D.maintain course and speed and sound no signal
第3题：
A. temperature
B. pulse
C. blood pressure
D. respiration
第4题：
stop your engines
sound two prolonged blasts of the whistle
sound the danger signal
slow to bare steerageway
第5题：
Officers observe ships with a pair of （）（望远镜）.
第6题：
A vessel is "in sight" of another vessel when ______.
A.she can be observed by radar
B.she can be observed visually from the other vessel
C.she can be plotted on radar well enough to determine her heading
D.her fog signal can be heard
第7题：
In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ______.
A.stop your engines
B.sound the danger signal at two-minute intervals
C.hold course and speed until the other vessel is sighted
D.take avoiding action as soon as possible
第8题：
Officers observe ships with a pair of __（望远镜）.
A.sextant
B.binoculars
C.compass
D.radar
第9题：
radar scanning
radar plotting
compass bearings
All of the above
第10题：
Reduce speed to bare steerageway
Stop your engines
Begin a radar plot
All of the above