SS3型机车用主变压器的型号为TBQ3—7000/25,其中7000指变压器的()
A、变压器容量
B、一次侧电压
C、二次侧电压
D、变压器损耗功率
参考答案:A
写出各组数的最小公倍数与最大公因数;
4和9
30和18
36和12
14和1.
-- Can you persuade your brother to go with us?
--- No, he will never do ______ he is asked to.
A. whatever B whenever C. however D. whichever