当木材含水率在纤维饱和点以上时,其强度随含水率增加而()。
A.降低
B.增加
C.无变化
参考答案:C
—Why is the traffic today moving so slowly? We are running late!
—Calm down. Let’s take ___________ route. Turn left over there.[ ]
A. a same
B. the same
C. a different
D. the different
肺的生理功能是()
A.主气
B.调气
C.行气
D.载气
E.纳气