用堆垛计算法计算面积指标时托盘面积系数取()。
A．0．25～0．30
B．0．35—0．40
C．0．40—0．50
D．0．45～0．60
参考答案：C
------ English has a large vocabulary, hasn’t it?
------Yes.____more words and expressions and you will find it easier to read and communicate.
A．To know
B．Knowing
C．Know
D．Known
外感头痛因其病邪不同，治法分别采用（）
A.祛风
B.散寒
C.化痰
D.化湿
E.清热
