对于现场仪表核对,下列说法错误的是()。
A、内外操配合
B、读数准确
C、外操独自完成
D、仪表逐一核对
参考答案:C
Some seemingly harmless blogs might become harmful when _____ on the Internet by millions of people. [ ]
A. to read
B. reading
C. read
D. being read
设想有一天整个因特网的DNS系统都瘫痪了(这种情况不大会出现),试问还可以给朋友发送电子邮件吗?