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高活性剂浓度体系

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你开叫1H,你的同伴应叫1S,你认为他是()

A. 消极性应叫
B. 积极性应叫
C. 阻击性应叫
D. 模棱两可性应叫

根据需要对文件可进行修改、更名、()、移动、复制和发送等操作。

i5T3.3机床主轴前端孔锥度及锥孔直径是多少?

Your vessel is NOT making way,but is not in any way disabled.Another vessel is approaching you on your starboard beam.Which statement is TRUE().

A. Your vessel is obligated to stay out of the way
B. The other vessel must give way,since your vessel is stopped
C. You should be showing the lights or shapes for a vessel not under command
D. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver

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