共模干扰电压，一种是测量本身就具有的相互影响；另一种是被测信号源与DVM间的相互影响

The people, _____ had been damaged by the flood, were given help by the Red Cross. [ ]

A. all whose homes

B. all of whose homes

C. all their homes

D. all of their homes

腹痛，里急后重，下痢脓血属于()

A.食滞胃肠证

B.肠道湿热证

C.脾不统血证

D.肠热腑实证

E.胃热炽盛证

（）是关系人民福祉，关乎民族未来的长远大计。

A.反对霸权主义

B.建设生态文明

C.和平与发展

智能表载波模块中，TXD灯在通讯时闪烁为（）。

A.红色

B.绿色

C.黄色

D.以上都不是