图示T形截面杆,一端固定一端自由,自由端的集中力F作用在截面的左下角点,并与杆件的轴

题型:单项选择题

问题:

图示T形截面杆,一端固定一端自由,自由端的集中力F作用在截面的左下角点,并与杆件的轴线平行。该杆发生的变形为:()

A.绕y和z轴的双向弯曲

B.轴向拉伸和绕儿y、z轴的双向弯曲

C.轴向拉伸和绕z轴弯曲

D.轴向拉伸和绕y轴弯曲

考点:水利水电工程第五章材料力学第五章材料力学题库
题型:单项选择题

根据汉语、首字母或中文释义写出单词,并注意它的形式。

1. There are some _____(香蕉), too. They are for me.

2. I go to the _____ (动物园)on Sundays. I often have a good time there.

3. I often help my mother _____(洗) clothes after school.

4. I don't often walk to school. I often take a _____ (公共汽车).

5. We play football after school on _____ (星期四).

6. I often w______ TV on Saturday evening.

7. These girls are his sisters. T_______ are very slim.

8. Millie often goes s_______ with her mother in the streets on Sunday.

9. We have no classes at the w______.

10. Lily and Lucy are c______. They are in the same class.

题型:单项选择题

棘层内疱可见于()

A.天疱疮和疱疹性口炎

B.天疱疮和瘢痕类天疱疮

C.天疱疮和扁平苔藓

D.疱疹性口炎和扁平苔藓

E.扁平苔藓和瘢痕类天疱疮

题型:单项选择题

国有土地有偿使用

题型:单项选择题

科学假定了记忆的核心内容是()。

A.模糊的

B.不稳定的

C.稳定的

D.不确定的

题型:单项选择题

()的储能元件用于缓冲直流环节和电动机之间的无功功率的交换。

A.继电器

B.放大器

C.中间直流环节

D.交流环节

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