"An electrical device for sensing normal or abnormal conditions." what does the above sentence describe?
A.detector;
B.transmitter;
C.module;
D.clamshell;
正确答案是A
"An electrical device for sensing normal or abnormal conditions." what does the above sentence describe?
A.detector;
B.transmitter;
C.module;
D.clamshell;
正确答案是A