患者久病卧床不起，4天前出现发热咳嗽，胸痛，呼吸困难等症，X线胸透见两肺下叶有多数散

单女士，27岁，第2孕。妊娠39，阵发性宫缩痛约30min急诊入院，检查：宫缩持续50s，间歇2～3min，宫口开大3cm，先露头，胎膜未破，先露"0"，胎心正常。

要注意此产妇已临产，表现为（）。

A.正常产力

B.协调性宫缩乏力

C.不协调性宫缩乏力

D.协调性宫缩过强

E.不协调性宫缩过强

— Has the homework been finished?

— Our teacher asked you       .

A．whether had the work been finished

B．if the work had been finished

C．the homework has been finished

D．the work had been finished

慢性肾衰竭的中医根本病机是

A．饮食不当，痰湿内阻

B．肾元虚衰，湿浊内蕴

C．肾病日久，瘀血阻络

D．感受外邪，热毒侵袭

E．劳倦内伤，脾肾两虚

下列属于德尔菲法的优点的是( )。

A．有利于思想交流
B．对问题分析极为客观
C．能采纳少数人的优秀创意
D．成本低

准实验是一种对所有可能影响实验效果的因素都作了充分控制的实验。