CR成像时,将光信号转化为电信号的是()
A.IP
B.FPD
C.光电倍增管
D.摄像机
E.非晶硒
参考答案:C
Experts say ________ to sunlight for too much time will do harm to one’s skin.
A.exposed
B.having exposed
C.being exposed
D.exposing
专项作业车设