计算机通信网可以划分为两部分,它们是()。
参考答案:通信子网、资源子网
— Can I use the telephone on the table, sir?
一 Under no circumstances ____to use the telephone in the office for personal affairs.
A.anyone is allowed
B.nobody is allowed
C.is anyone allowed
D.is nobody allowed
正常成人每日不显性失水(从皮肤与肺)量为
A.1000~1500mlB.500~750mlC.100~250mlD.250~500mlE.800~1000ml