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【单选题】
为预防误机,导游送国内航班时,按中国民航的规定,航班预订起飞前( )分钟抵达机场。A.
30
B.
45
C.
60
D.
90
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反馈参考答案：
举一反三
【单选题】苯丙氨酸脱氨酶阳性的一组细菌为
A.
克雷伯杆菌属、沙雷菌属
B.
埃希菌属、沙门菌属
C.
普罗威登斯菌属、摩根菌属
D.
志贺菌属、枸橼酸杆菌属
E.
变形杆菌属、耶尔森菌属
【简答题】_____ is the essence of the Renaissance.
【单选题】Which of the following is NOT true about mooring lines?
A.
Mooring lines are leading in different directions.
B.
Mooring lines have different usages.
C.
Mooring lines prevent a ship from moving forward and backward.
D.
All mooring lines are leading ashore from the fore end or aft end of a ship.
【单选题】Mooring winch should be equipped with mechanical brakes which are capable of holding ______.
A.
half the breaking strength of the mooring line
B.
the full breaking strength of the mooring line
C.
the maximum expected tension of the mooring line
D.
50% over the working tension of the mooring line
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