皮皮学，免费搜题
登录
搜题
【单选题】
用试管加热固体药品时,有时因操作不当而出现试管炸裂的现象,下列操作不会造成试管炸裂的有( )A.
加热前试管外壁有水
B.
试管夹夹持在试管的中上部
C.
试管口略向上倾斜
D.
加热不均匀，局部温度过高
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】The teachers often tell us _________ in the river. It’s dangerous. A. not swim B. don’t swim C. not swimming D. not to swim
A.
not swim
B.
don’t swim
C.
not swimming
D.
not to swim
【简答题】中兴SDH设备主要功能模块有: 、 、 、 和主控单元。
【单选题】Teachers often tell us in the river after school.
A.
don’t swim
B.
not swim
C.
not to swim
【单选题】What's the main reason for big cities to build their own recycling plants?
A.
To deal with wastes in a better way.
B.
To protect the environment from pollution.
C.
To get raw materials locally.
D.
To get big profits from those plants.
【单选题】The boys don’t know ___________.
A.
how do they swim
B.
how swim
C.
they how swim
D.
how to swim
相关题目：
参考解析：
知识点：
题目纠错 0
发布
