整流变压器工作接地和电控装置工作接地电阻不应大于()
(A)4Ω;
(B)100Ω;
(C)1Ω;
(D)12Ω。
参考答案:C
下列行星中距离地球最远的是
A.火星
B.木星
C.土星
D.天王星
根据语境,用恰当的语言完成对话。
A: Hello,Kangkang. How beautiful your new bike is!
B:小题1:____________________________________________
A: Where is it made ?
B:It is made in Shanghai.
A:I also want to buy one.小题2:_________________________________________
B:In Huangshang Supermarket. And there are many different colors.
A:小题3:____________________________________________________________-
A:I like black best.小题4:_____________________________________________
B:About 160 yuan.
A:The price is OK.Well,would you like to go to the shop with me on National Day?
B:小题5:_________________________.I will be free that day.