A.The efficiency increases
B.The efficiency decreases
C.The efficiency remains the same
D.The efficiency cannot be determined.
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A.Shuga
B.Floe
C.Spicule
D.Bergy bit
A.To navigate intentionally
B.To navigate intensely
C.To navigate carefully
D.To navigate completely
A.Dilated pupils and shallow breathing
B.Diarrhea and frequent urination
C.Muscle tenseness in almost the entire abdomen
D.Extreme sweating and reddening skin
A.borrow
B.lend
C.take
D.let
A.deep water
B.shallow water
C.stiff soils
D.soft soils
最新試題
Which is NOT a distress signal?（）
We have no steel wire．You had better（）us one.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.
What is the primary purpose of a splint applied in first aid?（）
The radiotelegraph alarm signal is（）.
There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.
The towing light is a(n)（）.
To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.
When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio（）.