问题
单项选择题
直流配电电屏内放电回路的压降，规定应不大于（）。
A.0.3V
B.0.1V
C.1V
D.0.5V
答案
参考答案：D
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直流配电电屏内放电回路的压降，规定应不大于（）。
A.0.3V
B.0.1V
C.1V
D.0.5V
参考答案：D
______ difficulties we may face in our life, we should keep calm and take measures to get them over.
A. Whenever
B. Whatever
C. Whichever
D. However