单选题Kort nozzles are installed around the propellers of some vessels to（）.AIncrease the thrust of the propellerBProtect the propeller from striking sawyersCPrevent the propeller from striking barges towed on the shipDPrevent the propeller from touching bottom in low water
单选题
Kort nozzles are installed around the propellers of some vessels to（）.
A
Increase the thrust of the propeller
B
Protect the propeller from striking sawyers
C
Prevent the propeller from striking barges towed on the ship
D
Prevent the propeller from touching bottom in low water
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