儿童食品、玩具、用具和游乐设施，不得有害于儿童的（）。A、发_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

儿童食品、玩具、用具和游乐设施，不得有害于儿童的（）。

A、发育、成长

B、安全、健康长寿

C、生活、教育

答案

参考答案：A

单项选择题

Questions 14-23

·Look at the ten statements for this part.
·You will hear a story about communication through time.
·Decide whetheryou think each statement is right(R) wrong(W) or not mentioned(NM).
·You will listen to it twice.
·Markyour answers on the Answer Sheet.

The meaning of time is the same in different parts of the world.

A. Right

B. Wrong

C. Not Mentioned

问答题简答题

简述常用的轴承异常诊断方法。