在中性点直接接地系统中，电气设备（）是危险的。
A.接地
B.不接地
C.接地和不接地
D.不漏电
参考答案：B
The environment is getting worse in the present days, so the government must take _______ to stop people _______ too many trees.
A．methods; to destroy
B．methods; from destroying
C．measures; from destroying
D．measures; to destroy
A．甲乙
B．甲丁
C．乙丙
D．丙丁
