题目内容

某航班因天气原因返航,航空公司工作人员为了赶时间,飞机未挡轮挡就要求加油员加油,加油员看到该人手势后就驾车驶入了加油位置。

A. 正确
B. 错误

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滚动轴承的润滑有何规定?

When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will ().

A. pick up more of any increase in load
B. pick up less of any increase in load
C. share an equal amount of any increase in load
D. drop an equal amount of any decrease in load

物流管理信息系统管理的难点

用氧化还原发测得某试样中铁的质量分数为:20.01%,20.03%,20.04%,20.05%,分析结果的标准偏差为()

A. 0.01479%
B. 0.0148%
C. 0.015%
D. 0.017%

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