下列哪项不属于人才凝聚的途径（） A.用机会锻炼人才 B.用愿景引导人才 C.用正确

常用的贮浆设备中，高浓浆池贮存浓度为（）

A.8%~15%

B.5%~8%

C.16%~20%

D.21%~24%

It was _____ that caused him to serve dinner an hour later than usual.

A．we being late

B．our being late

C．we were too late

D．because we were late

某医师欲采用横断面调查研究的方法，调查高血压病在人群中的分布情况，选择最合适的指标为

A．病死率

B．发病率

C．死亡率

D．患病率

E．二代发病率

李渔戏曲的创作成就？

触电人已失去知觉、呼吸困难，应立即在现场进行人工呼吸急救。