管道压力损失包括（）。
A.沿程压力损失
B.局部压力损失
C.总压力损失
D.热压力损失
E.冲击力损失
参考答案：A, B
This poem can remind of the good old days___ studied in this beautiful school.
A．whoever
B．whomever
C．no matter who
D．anyone
胞宫的生理功能月经期、分娩时具体表现为
A．主月经B．孕育胎儿C．藏而不泻D．泻而不藏E．亦藏亦泻
