听力原文:W: I'm trying to find out how this dishwasher works. The manual is in French, but I can't wait for Bill to translate it for me. M: Don't worry, Mary, I can do the dishes before the machine starts to work. What does the man mean?
A.
He will tell Mary how to operate the dishwasher.
B.
He will wash the dishes himself instead.
C.
He will help Bill to translate the manual.
D.
He himself will operate the dishwasher.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【简答题】工作在放大区的某三极管,如果当Ib从12μA增大到22μA时,Ic从1mA变为2mA,那么它的β约为A. 83 B. 91 C. 100 D. 50