搜题请搜索小程序“爱下问搜题”
问题 选择题

把CO2通入含NaOH 0.8g的碱溶液中，将产物在减压条件下蒸干后，得固体1.37g，则通入CO2的质量是（　　）

A．0.44g

B．0.88g

C．0.66g

D．都不是

答案

答案：C

改错题

下列各句子中均有一处错误，请找出并改正。

1. He kept the boy to stand there for hours.                                            _______________

2. Students can't be made study all day.                                                  _______________

3. The teacher told John get his notebook in the office.                            _______________

4. Don't let children to play in the busy streets. It's dangerous.                 _______________

5. Mrs Pan makes her son practices playing the piano after school.          _______________

查看答案
单项选择题

浅触诊主要用于检查（）

A.肾脏大小

B.体表温度

C.肠内容物

D.腹腔包块

E.肝脏边缘
查看答案