关于蓄积系数说法正确的是
A.K= LD50(1)/LD50(1)B.K值<5为轻度蓄积C.K值>3为中度蓄积D.K值>1为明显蓄积E.K值<1为高度蓄积
参考答案:E
重量分析法是什么?
Private cars are required to take turns off roads one out of five weekdays ____the
traffic pressure.
A.to reduce
B.reducing
C.reduce
D.reduced