单项选择题
In comparison to electric power，hydraulic power for jacking systems has the advantage of（）.
A.better control capabilities
B.less maintenance and repair
C.fewer personnel needed during jacking
D.less preload needed
相关考题
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单项选择题
I’ll have the damaged parts repaired in Hongkong and send you in due course the amount of expenses（）.
A.incurred
B.happened
C.spent
D.paying out -
单项选择题
If your radiotelephone fails while underway,（）.
A.you must visually signal oncoming vessels
B.you must immediately tie up in the nearest port until the radiotelephone is repaired
C.you must anchor until the radiotelephone is repaired
D.the loss of the radiotelephone must be considered in navigating the vessel -
单项选择题
If your bridge-to-bridge radiotelephone ceases to operate，you must（）.
A.immediately anchor your vessel and arrange for repairs to the system
B.moor your vessel at the nearest dock available and arrange for repairs to the system
C.arrange for the repair of the system to be completed within 48 hours
D.exercise due diligence to restore the system at the earliest practicable time
