It takes about 12 seconds to reverse______full speed ahead______full speed astern．
A.at，to
B.to，from
C.from，to
D.at，from
第1题：
A、would go
B、went
C、will be going
D、goes
第2题：
In reducing engine speed to an efficient propeller speed by the use of reduction gears, _______.
A.speed and torque are both reduced
B.speed is reduced and torque remains unchanged
C.speed is reduced and torque is increased
D.speed is sometimes unchanged while torque is increased
第3题：
A、takes to
B、takes away
C、takes down
D、takes in
第4题：
Speed must be regulated ______ no damage is done to the wharf．
A.in order to
B.so as
C.so that
D.such that
第5题：
In restricted visibility the safe speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．
A.too low to
B.too high to
C.too high for
D.too low for
第6题：
My ship’s engine responds well to telegraph orders and takes about 80 seconds to reverse from full speed ahead to full speed astern. This sentence ______.
A.indicates the engine’s particulars
B.tells the engine’s function
C.shows the engine’s type
D.refers to the engine’s information
第7题：
In restricted visibility the speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．
A.too low to
B.too high to
C.too high for
D.too low for
第8题：
I think what ________ me about his painting is the colors he uses.
A applies to
B takes to
C resorts to
D appeals to
第9题：
To ______ Admiralty Charts 438，latitudes taken from this chart should be increased by about 5 seconds．
A.convert to
B.come to
C.look at
D.agree with
第10题：
An anemometer on a moving vessel measures ______.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction