有一恒定出流的薄壁小孔口如图示,作用水头H0=4m,孔口直径d=2cm,则其出流量Q

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问题:

有一恒定出流的薄壁小孔口如图示,作用水头H0=4m,孔口直径d=2cm,则其出流量Q为()。

A.1.82×10-3m3/s

B.1.63×10-3m3/s

C.1.54×10-3m3/s

D.1.72×10-3m3/s

考点:一级注册结构工程师一级结构师基础知识一级注册结构工程师基础知识考前冲刺(一)
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有人觉得自己家里的客厅太窄小,决定在客厅中装一面大镜子,使客厅可以看起来大一些,你建议他装

A.平面镜

B.凸面镜

C.凹面镜

D.都一样

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When I first entered university, my aunt, who is an English professor, gave me a new English dictionary. I was (16) to see that it was an English-English dictionary, also known as a monolin-gual dictionary. (17) it was a dictionary intended for non—native learners, none of my classmates had one (18) , to be honest, I found it extremely (19) to use at first. I would look up words in the dictionary and (20) not fully understand the meaning, I was used to the (21) bilingual dic-tionaries, in which the words are (22) both in English and Chinese, I really wondered why my aunt (23) to make things so difficult for me. Now, after studying English at university for three years, I (24) that monolingual dictionaries are (25) in learning a foreign language.

As I found out, there is (26) often NO perfect equivalence(对应) between two (27) in two language. My aunt even goes so far as to (28) that a Chinese "equivalent" can never give you the (29) meaning of a word in English! (30) , she insisted that I read the definition(定义) of a word in a monolingual dictionary (31) I wanted to get a better understanding of its meaning. (32) , I have come to see what she meant.

Using a monolingual dictionary for learners has helped me in another important way. This dictionary uses a(n) (33) number of words, around 2,000, in its definitions. When I read these definitions, I am (34) exposed to (接触)the basic words and learn how they are used to explain objects and ideas. (35) this, I can express myself more easily in English.

22()

A. explained

B. expressed

C. described

D. created

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什么是远动技术?

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从心理学上讲。“一心”是可以“二用”的,这体现了注意的( )

A.稳定性
B.广度
C.分配
D.转移

题型:单项选择题

关于行政机关公务员处分的说法,下列哪一选项是正确的

A.行政诉讼的生效判决撤销某行政机关所作的决定,即应给予该机关的负责人张某行政处分

B.工商局干部李某主动交代自己的违法行为,即应减轻处分

C.某环保局科长王某因涉嫌违纪被立案调查,即应暂停其履行职务

D.财政局干部田某因涉嫌违纪被立案调查,即不应允许其挂职锻炼

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