不同管径、不同物性的流体的临界流速雷诺数ReC基本相同。

在全口义齿修复时，对于前牙的大小的确定，不起决定作用的是()

A．唇的长短

B．患者的拔除前牙

C．患者的面形大小

D．颌弓形状

E．两口角线间的长度

Jenny was my grandmother’s sister and she was an amazing woman. She was born in 1901 and  小题1:  in 2000. It was a pity that she didn’t live to celebrate（庆祝）her 100th birthday,  小题2:  she had a good,long life.

She had already been a professional   小题3:  before many women had jobs.She taught in Africa for many years. Then she moved to Malaysia and taught English there for a few years. At that time,people didn’t tralvel  小题4:  a plane, so she had to travel there by ship. It took her three months  小题5:  from England to Malaysia in those days. In 1947,she traveled by plane for the first time. This made traveling  小题6: easier and quicker. She continued to teach around the world until she was 75 years old.

Jenny really loved teaching and she was also good at telling stories. I always loved to hear her   小题7:  her stories. They were  小题8:  interesting that I would like to listen to her when I was free. It was  小题9:  that she could remember everything even though she was so old. I think it was because she never stopped  小题10: .My grandmother’s sister was really an amazing woman.

小题11:A.death             B.die                 C.died

小题12:A.but               B.and                 C.or

小题13:A.singer            B.teacher             C.manager

小题14:A.on                B.at                  C.by

小题15:A.to sail            B.sailing              C.to fly

小题16:A.too               B.much               C.more

小题17:A.talk to            B.talk with            C.talk about

小题18:A.so                B.such                C.very

小题19:A.boring            B.relaxing             C.amazing

小题20:A.work and think     B.working and thinking   C.to work and think

下列哪项属于小儿所特有的能量需要（）

A.基础代谢

B.食物的特殊动力作用

C.活动

D.生长发育

E.排泄

关于老年人膳食原则的表述，错误的是（）。

A.减少能量摄入

B.控制脂肪摄入

C.摄入大量的动物性蛋白质

D.多吃蔬菜和水果

E.碳水化合物以谷类为主，减少精制糖

发电机调节器分触点式和（）等类型。

A.晶体管式

B.霍尔式

C.圆柱式

D.离心式