球磨机的结构包括哪几部分？

阅读下面的短文，把A…D四个句子填入文中的空缺处（1-4），使短文完整正确，然后完成第5题。

     Americans think much about time. When they are children, they learn to value time. People often teach

children to be on time to go to school, to work and to do everything 1_______. When a person is dying,

they say he is living on borrowed time.

     Americans think time is money. Time is knowledge. 2_______ A working American has to work hard

for eight hours a day and forty hours a week. This is the working time. In his spare time,he also works

hard for more money. 3_______ In the street you can hardly see a man walking slowly. They walk very

fast. In fact, they are running. 

     4._______ But sometimes they also hate time,because they feel that they have become servants (仆人)

of the clock.

A. Even on Saturday and Sunday he also works hard as usual.

B. Time is everything in America.

C. Americans love time because time can bring them money and a lot of things.

D. When they are having a good time,they say time flies.

5. What's the best title for this passage?

A. Americans and Time

B. Learn to Value Time

C. How to Save Time

D. Time Is Money

路面工程各结构层之间的施工是（）。

A.平行作业法

B.依次作业法

C.流水作业法

D.均衡流水法

女性，22岁。因妊娠50天行吸宫术后 20天，有较多 * * 流血。查：宫口松，子宫约妊娠6周大小，软，血HCG 1250～2500U/ L，下列何种诊断可能性最大

A．子宫复旧不良
B．吸宫不全
C．绒毛膜癌
D．侵蚀性葡萄胎
E．子宫内膜炎

除（）、（）之外，刻制其他业务核算专用印章，应报总行备案。

A.本票专用章

B.汇票专用章

C.业务专用章

D.国内信用证专用章

计算灌溉制度的原理