树木与架空110kV电力线路导线的最小垂直距离为(),最小水平距离为()。
A.3m;2m
B.4m;5m
C.5m:5m
D.3m;3m
参考答案:A
The old man lonely at all since we began to visit him once a week. [ ]
A. hasn't felt
B. don't feel
C. didn't feel
D. haven't felt
假设一类土建工程,企业管理费全员人均年开支额是2500元,生产工人占全员80%,人工费占直接工程费比例为12%,全年有效施工天数为240天,日均人工工资单价为20元,则一类土建工程的企业管理费费率为()。
A.7.8%
B.6.25%
C.52.1%
D.65.1%