避雷器间隙的击穿电压比被保护设备绝缘的击穿电压（）。
A、高
B、稍高
C、相等
D、低
参考答案：D
下面关于启动进程机制的叙述中，错误的是______。
A．在DOS中是EXEC函数
B．在Windows中是CreateProcess函数
C．在OS/2中是CreateProcess函数
D．在DOS中是CreateProcess函数
A．( What are the differences between marketing and cost-effective publicity
B．( Could you say something on the subject of cost-effective publicity
C．( How much will the conference on marketing and sales cost us
D．( When will the subject of the 50-minute conference be publicized
