某些具有人体可能偶然触及的带电设备的安全电压额定值为()。
A.380V
B.220V
C.60V
D.24V
参考答案:D
My wife has three brothers, all are ___ than she,.___George is an officer.
A.elder, The eldest
B.old, The oldest
C.elder, The old one
D.older, The eldest
电视的发展。