问题 单项选择题

在物料的降速干燥阶段,不正确的表述是()

A.物料内部的水份及时补充到物料的表面

B.改变空气状态及流速对内部干燥速度的影响不大

C.干燥速率主要由物料内部水分向表面的扩散速率所决定

D.提高物料的温度可以加快干燥速率

E.改善物料的分散程度可以加快干燥速率

答案

参考答案:A

填空题

缺词填空。

     Many teenagers have problems that worry them. Some do not learn their school subjects well. Some

are good at learning and do well in exams, but they are doing so poorly in sports that their classmates call

them "bookworms". So many teenagers s     1    from stress. The good news is that there are some simple

ways to d    2    with stress.

     Firstly, eating a h    3    diet, getting enough sleep and doing exercise are very important. How can we be

happy if we are not fit?

     For school work, planning ahead can help. Making a list of the things they need to do and p    4    when

to do them can help students organize their time. If you are weak in a subject, studying hard and asking a

teacher for a     5    can help.

     Students should pay n    6    attention to people who laugh at them. I    7   , they should think about the

things they are good.

     Then students should also make e    9    time for their hobbies. Playing sport, reading and watching films

help them r 9 .

     F    10   , it is suitable for teenagers to share their problems with their friends and parents.

1.s               2.d               3.h               4.p               5.a              

6.n               7.I               8.e               9.r                10.F              

单项选择题