下列情况不需做保护接地的是().
A.在正常情况下不带电,但有可能接触到危险电压的裸露金属部件
B.本质安全型仪表金属外壳
C.仪表盘外壳
D.标有”G”的接线端子
参考答案:B
--- Can you please tell me something about life in the future?
---Oh, maybe in the future, people will _______ by robots.
A.cared for
B.be taken good care
C.be cared for
D.look after
粮食和油料后熟期的长短,随粮种、品种以及储藏条件的不同而有很大的差异。有的后熟期较长,可达()。
A.1个月
B.6个月
C.3个月
D.8个月