万用表欧姆档怎么读数:英语19~~~

来源:百度文库 编辑:杭州交通信息网 时间:2024/05/12 02:01:29
The doctor in _______ of the experiment has gone to Hebei for a few days.
A.
search
B.
charge
C.
contact
D.
support

B
in charge of 负责:负责这项实验的博士已经去河北有几天了

B
负责.