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【简答题】
简述中间商的筛选标准。
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皮皮学刷刷变学霸
举一反三
【单选题】You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made ________．
A.
Flinders bar first，then the heeling magnet and spheres
B.
Heeling magnet first，then the Flinders bar and spheres
C.
Flinders bar first，then the spheres and heeling magnet
D.
Spheres first，then the Flinders bar and heeling magnet
【单选题】The magnetic compass operates on the principle that（）.
A.
like magnetic poles attract
B.
unlike magnetic poles repel
C.
unlike poles attract
D.
the poles of the compass line up with the geographic poles of the earth
【单选题】The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.
A.
deviation
B.
variation
C.
compass error
D.
dip
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