Though ________ to a higher position, sh_爱下问搜题

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问题选择题

Though ________ to a higher position, she still didn't content herself. [ ]

A. promoting

B. being promoted

C. having promoted

D. promoted

答案

答案：D

选择题

下列物质的鉴别方法，错误的是

A．用肥皂水区别硬水和软水

B．用灼烧的方法区分黄金和假黄金（铜锌合金）

C．用水区分硝酸铵和氯化钠固体

D．用闻气味的方法区别二氧化碳和一氧化碳

单项选择题

停炉后燃烧室应继续维持通风，通风量大于（）额定风量。

A.20%

B.30%

C.40%