在电缆连接的基本要求中,电缆线芯连接后,连接处要有足够的抗拉强度,其值不低于原电缆芯强度的()。
A.60%
B.70%
C.80%
D.90%
参考答案:B
He is very stubborn, it is impossible to argue _____________ what he doesn’t want to.
A.with him about
B.against him about
C.him into doing
D.him to do
计算机的串口又叫串行接口,现在的电脑一般有()串行接口。
A、USB
B、COM1
C、PCI
D、COM2