如图实验操作或装置正确的是_刷题宝

题干

如图实验操作或装置正确的是（）

A：处理尾气

B：盛放氧气

C：收集一定体积氧气

D：向试管中滴加液体

上一题下一题 0.0难度选择题更新时间:2019-08-23 07:08:50

答案(点此获取答案解析）

C

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下列化学用语或模型表示正确的是（）

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设函数f(x)在 $x_{0}$ 处可导，则 $\lim_{△ x \to 0} \frac{f (x_{0} - △ x) - f (x_{0})}{△ x}$ 等于（）

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今年政府工作报告中指出，2017年发展的主要预期目标是：国内生产总值增长6．5%左右，说明我国工作中心已不再是经济建设。

同类题4

读浙江等高线图，完成下列各题

同类题5

从方框中选择合适的句子，并将其序号填在横线上。（有两个多余的选项）。

A: I'm not feeling well today. ____

B: I'm sorry to hear that. ____

A: Yes, I do. I took my temperature just now. It's 38℃.

B: What did you have for breakfast today?

A: ____

B: You'd better go to see a doctor. ____

A: It's so kind of you. Thanks a lot.

B: ____ I think we should go there by taxi.

A: OK.

A. What's the matter with you?

B. I will go to the hospital with you.

C. Do you have a fever?

D. Not at all.

E. And you shouldn't stay up late.

F. Maybe I have got a bad cold.

G. I just had a glass of milk.

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