4个月小儿，单纯母乳喂养，腹泻2个月，大便3-4次/天，无黏液、脓血，糊状，精神食欲

属于短周期元素的是

A．K

B．Ca

C．I

D．P

根据句意,在答题卷标有题号的横线上,写出括号内所给单词的适当形式。

1.  Little Kitty likes hiding ________ (she) behind the door to frighten her friends.

2.  This term he did ________ (bad) in English than last term. He didn't try his best.

3.  The boy made no mistakes(错误) in his homework because he did it ________ (careful).

4.  These are those ________ (swim) bags. Please take care of them.

5.  My grandfather will have his ________ (ninety) birthday next Sunday.

影响公司的长期偿债能力除资产和负债以外的其他因素包括( )。

A．经济周期

B．长期租赁

C．担保责任

D．或有项目

能用于分子分离的是（）

A.垂熔漏斗滤过法

B.离心分离法

C.微孔滤膜滤过法

D.超滤膜滤过法

E.滤纸过滤法

男性，35岁。间歇性右下腹绞样痛3天。尿常规：高倍镜下红细胞充满视野，白细胞2～3／HP，腹部X线平片：可见右输尿管下段走行区一0.6cm高密度阴影。IVU检查：可见右输尿管下段结石，其上段输尿管轻度扩张，右肾轻度积水。

此时的治疗可采取（）。

A.膀胱切开取石术

B.套石术

C.药物排石

D.大量饮水等待自然排出

E.体外震波碎石