下列化学实验操作，正确的是_刷题宝

题干

下列化学实验操作，正确的是（）

A：点燃酒精灯

B：检查气密性

C：读取液体体积

D：加热液体

上一题下一题 0.0难度选择题更新时间:2018-09-17 12:23:11

答案(点此获取答案解析）

B

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在弹性限度内，弹簧的伸长量△L与受到的拉力F成正比，如图所示，能正确表示这种关系的是（）

同类题2

阅读下面材料，从每题所给的A、B、C、D四个选项中选出一个最佳选项。

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The program is designed not only to encourage people to learn Chinese, but also to report to them about China's culture, sightseeing and sports. Learn to Speak Chinese continues to play an active role in helping the world learn more about China. Now, we are planning a new program, Primary Chinese, to be aired this year.

Requirement

Age 25-45;

Good at both English and Chinese;

Outgoing person;

Living in Beijing;

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同类题3

如图，⊙O为锐角 $△$ ABC的外接圆，已知 $∠ B A O = 18 °$ ，那么 $∠ C$ 的度数为____ ．

同类题4

位于亚热带大陆东、西两岸的是（）

同类题5

选择合适的选项填空，补全短文

Tai Lihua is a Chinese ____ (A. dancer B. singer). She is very beautiful.____ (A. With B. As )a child，she became deaf and dumb(哑的). She couldn't hear ____ (A. or B. and )say. She was very sad. Later，she had a teacher. The teacher taught ____ (A. she B. her)to dance. She was very hardworking. She danced very ____ (A. well B. good). Now she is very famous.

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