线路电压为35 kV的导线与建筑物之间的最小垂直距离为( )。
A.4.0mB.5.0mC.6.0mD.7.0m
参考答案:A
Is it in this room in _____ the great writer once lived ____ he finished his last works?
A.which; that
B.that, where
C.that; which
D.where; that
有机磷农药中毒的潜伏期一般在()h以内。
A.1
B.2
C.3
D.4