题目内容

油在燃烧前先蒸发,在液体状态下与空气混合后燃烧。

A. 正确
B. 错误

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下面哪一条不是《中国航油飞机加油标准化作业指导书》罐式加油车灌完油进行油品质量检查后,应做的工作()。

A. 收回车辆状态标识
B. 进入车库后实施驻车制动
C. 挡好轮档
D. 关闭所有用电设备、门窗和电闸

If you are transmitting a distress message by radiotelephone you should().

A. use English language
B. always use the International Code
C. preface it by the word "Interco"
D. follow the transmission with the radio alarm signal

坚持实施积极的就业政策,以创业带就业,以(),推动创业型社会建设。

The CALC function is used several times within the sales report. To simplify maintenance you want to store the function in one place and call it from within your PL/SQL trigger code. Which node would you use in object navigator to create a report level programme unit to store the function?()

A. Programme units.
B. PL/SQL libraries.
C. Database object.
D. Built in packages.

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