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【单选题】
Flanking rudders effect a vessel’s heading because of the ______.A.
effect of the propeller flow on the rudders
B.
water flow due to the vessel’s movement through the water
C.
tunnel affect of the water flow past opposing rudders
D.
discharge current being channeled to impinge on the vessel’s deadwood
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【单选题】8051单片机的中断源在同一优先级别里,5个中断源同时发出中断请求时,程序计数器PC的内容变为( )。
A.
000BH
B.
0003H
C.
0013H
D.
001BH
【单选题】8051单片机的中断源在同一优先级别里,5个中断源同时发出中断请求时,程序计数器PC的内容变为( )。
A.
0x0003
B.
0x000b
C.
0x0013
D.
0x001b
【单选题】A spring line leads ______.
A.
fore and aft from the ship’s side
B.
to the dock at a right angle to the vessel
C.
through the bull nose or chock at the bow
D.
through the chock at the stern
【单选题】-How's the weather today? - ___ ________. [ ]
A.
It's winter.
B.
It's windy.
C.
I like it.
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