（）is not a condition for a ship of 400 tons gross tonnage and above other than an oil tanker to discharge certain amount of oil or oily mixtures into the sea.
A. the ship is not within a special area
B. the ship is more than 12 nautical miles from the nearest land
C. the ship is proceeding en route
D. the instantaneous rate of discharge of oil content does not exceed 60 liters per nautical mile
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警戒带分为一次性和重复使用两种分别有（）和（）两种。
A. 涂反光材料
B. 长的
C. 短的
D. 不涂反光材料
《中国移动通信维护规程体系》规定：对于普通空调的室内外连接管，分体壁挂式尽量不超过5米，小于4匹的分体立柜式尽量不超过10米，5匹左右的分体立柜式尽量不超过15米。
A. 正确
B. 错误
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