摸到红球的可能性是:
2:(2+3+5)=15.
故答案为:正确.
The police have ____ power to deal with such matters by ____ law.
A.the; the
B.不填;不填
C.不填;the
D.the;不填
每次更换或加大熔断器熔体时,都必须考虑()。
A、线路短路电流
B、线路的安装容量
C、熔丝的大小