咽鼓管的生理功能有误的是()
A.压力平衡
B.引流作用
C.防声作用
D.传声增压作用
E.防止逆行感染
参考答案:D
A PM wanted to show management, visually, how quality controls were affecting processes. The best tool to accomplish this is ______.
A.Cause and effect diagrams
B.Control charts
C.Flowcharts
D.Histograms
土方工程施工过程中,土壁的稳定,主要依靠土体的()。
A.内摩擦力
B.密实度
C.黏结力
D.吸附力