單項選擇題In 1978,21989 vessels,including warships（）through the Suez Canal.
A.passed
B.passes
C.pass
D.past
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1.單項選擇題In a married falls rig at the after end of a hatch , a boom is rigged in a fore and aft line through its heel . Stresses on the outboard guy will be least if the guy is made fast at a point（）.
A.abreast the heel
B.at right angles to the boom when viewed from above
C.aft of the heel
D.forward of the spiderband
2.單項選擇題In a twin screw ship going half-ahead , both screws turning outboard and the rudder amidships,no current or wind,the vessel will（）.
A.move bodily to port
B.move bodily to starboard
C.move in a zig-zag motion
D.steer a fairly straight course
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