搜题请搜索小程序“爱下问搜题”
问题 单项选择题

对新船或经重大改建的船舶进行倾斜试验的目的是（）

A．以确定空船状态下的重心位置KG

B．以确定空船状态下的初稳心高度

C．以确定空船状态下的浮心高度KG

D．以确定空船状态下的KG和GM

答案

参考答案：D

填空题

用所给单词的正确形式填空。

1. My friends______ ( not play) football on Sunday.

2. He often______ ( swim) in the river every Sunday.

3. It's five o'clock now. Some people in London ______( run ) for trains.

4. —What are they doing?

    —They______ ( listen ) to music.

5. I can't _          ( speak) English , but I can write it.

6. Let's______ ( sweep) the classroom.

7. Yuanxiao______( bring) you good luck all the year round.

8. My mother and I______( clean) our living room now.

9. I want______( paint) my house white.

10. The boy______( watch) TV with his parents in the living room at the moment.
查看答案
选择题

根据下列实验现象得出的结论正确的是

选项实验现象结论
A将BaSO4浸泡在宝盒Na2CO3溶液中，部分BaSO4转化为BaCO3Ksp(BaSO4)>Ksp(BaCO3)
B某溶液中加入盐酸酸化的BaCl2溶液，有白色沉淀生成该溶液中一定存在SO42-
C滴有酚酞的Na2CO3溶液中加入BaCl2固体，红色变浅Na2CO3溶液中存在水解平衡
D溴水中通入SO2，溴水褪色SO2具有漂白性
 
查看答案