基础主梁在高度变截面处,上下钢筋深入支座长要达到什么要求()。A、深入支座长要满足L

题型:单项选择题

问题:

基础主梁在高度变截面处,上下钢筋深入支座长要达到什么要求()。

A、深入支座长要满足La

B、深入支座长要满足1000mm

C、深入支座长要满足15d

D、深入支座长要满足2倍的梁高

考点:平法识图与钢筋计算钢筋平法钢筋平法题库
题型:单项选择题

弹性纤维在结构和功能上具有

A.韧性大

B.折光性强

C.弹性好

D.有分支

E.着色深

题型:单项选择题

天台晓日、太清水月、草堂烟雾、西山晴雪景观分别在( )。

A.九华山、崂山、陕西、北京

B.天台山、陕西、四川、崂山

C.天台山、崂山、四川、北京

D.九华山、陕西、湖南、天台山

题型:单项选择题

某同学在《用双缝干涉测光的波长》的实验中,实验装置如图甲所示。使用的双缝的间距为d=0.025cm。实验时,当屏上出现了干涉图样后,通过测量头(与螺旋测微器原理相似,手轮转动一周,分划板前进或后退0.500mm)观察第一条亮纹的位置如图乙所示,其读数应为x1=         

mm,第五条亮纹位置如图丙所示,其读数应为x2=       mm,测出双缝与屏的距离为L=50.00cm,则计算待测光的波长的公式λ=___________(用x1、x2、d、L表示),求得待测光的波长λ=___________m。

题型:单项选择题

如果想在一个指定的元素后添加内容,下面哪个是实现该功能的()

A、append(content)

B、appendTo(content)

C、appendTo(content)

D、after(content)

题型:单项选择题

C


Jill lived with her grandma. The old woman was p enough that she could do everything herself at home.
As soon as Jill began to tidy the rooms or wash something, her grandma stopped her and told her to work hard at her lessons. Jill had to listen to her grandma and spent all her time on her study. So she went to college at last.
Now the girl has left college. She did well in all her subjects and easily found work in Mr. Brown’s company. She was sure Mr. Brown would put her in an important position(位置).
On the first day the boss gave her a broom and said, "Your first work is to sweep the offices. "
"What" the girl called out in surprise," I’m a college student, you know. "
"I’m sorry I don’t know that. Here, give me the broom and let me show you!\

______, so she was surprised.

A.Mr. Brown didn’t know Jill was a college student

B.Mr. Brown didn’t know Jill was good at her subjects

C.Mr. Brown didn’t like Jill at all

D.Mr. Brown told Jill to be a cleaner

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