根据《环境噪声污染防治法》,在城市市区噪声敏感建筑物集中区域内,不能再夜间进行产生环

题型:单项选择题

问题:

根据《环境噪声污染防治法》,在城市市区噪声敏感建筑物集中区域内,不能再夜间进行产生环境噪声污染的建筑施工作业的是()作业。

A.抢修 

B.抢险 

C.抢工期 

D.生产工艺要求必须连续

考点:建设工程法规及相关知识建设工程法规及相关知识题库
题型:单项选择题

The choice to adopt and hold gratefulness is the one that is different from those who suffer misfortune and those who enjoy a full life.

My mother died when I was 24. It was a very difficult time in my life - everything seemed to fall apart. I lost my job, and then my utilities were turned off. I had to take cold showers for six months. A neighbor who knew about my situation came to my house and made me an offer. I took care of her children as a job, and I no longer went hungry. I was surprised that someone would trust me-a young woman-with her children. And it was with the very confidence that before long I began taking care of other people's children, too. I have since moved 300 miles from Boise, Idaho. For more than 23 years I have made every effort to reach out to all the kind-hearted people who helped me when I was down and out. Without their trust, I don't know what I would have done. I am very involved in my community and volunteer at the local food bank, and I help out whenever I can. I'd like to owe what I am to whoever has offered me generosity.

If you are grateful for what you already have, the world will work together to give you more to be grateful for. Otherwise, the world will give you more to complain about.

Moreover, the true master learns to be grateful, in advance, for the things that are desired, because, being grateful in advance for some attainment or accomplishment does two very important things: one-it tricks your subconscious(潜意识)into believing that the goal is certain and two…it convinces other people, with whom you must interact to achieve your desires, that you know what you are about, that you are a winner, not a whiner(哀诉者).

65. The underlined "utilities" refers to such things as ______ in the passage.

A. gas and electricity  supplies                      B. water and gas supplies

C. shower equipment and water supply          D. heating and TV signals

66. The writer was grateful mainly for ______.

A. his neighbor's donation                B. his community       

C. having got the job                    D. others' trust

67. The writer's personal story in the second paragraph tells us that ______.

A. to be grateful will get you nowhere but away from home

B. we need to be grateful to be helpful and useful

C. a grateful person is most likely to be successful

D. the fragrance (芳香) stays in the hand that gives the rose

68. The best title for the passage would be ________.

A. A Thank-You Note to Trusting Neighbor   B. You Are a Winner, Not a Whiner

C. Gratefulness Brings a Great Fullness to Life D. Be Grateful to Life in Advance

题型:单项选择题

如图一所示,ABCD是一个T型支架,已知整个支架的质量为m1=5kg,质心在BD上、离B点0.2m的O点处,BD=0.6m,D点通过铰链连接在水平地面上,ABC部分成为一斜面,与水平地面间的夹角为37°,且AB=BC.现有一质量为m2=10kg的钢块以v=4m/s的初速度滑上ABC斜面,钢块与斜面间的动摩擦因数μ=0.25.问:T型支架会不会绕D点转动?

某同学的解题思路如下:

可以先算出钢块静止在ABC上恰好使支架转动的位置,如图二所示.根据支架受力情况写出此时力矩平衡的式子:MN=Mf+MG,可根据该式子求出该位置到C点的距离S1

( MN、Mf、MG分别是钢块对斜面的压力的力矩、摩擦力的力矩以及T型支架自身重力的力矩,其中N=m2gcos37°,f=m2gsin37°.)

然后算出钢块以4m/s的速度在斜面上最多能滑行的距离S2

比较这两个距离:若S1≥S2,则T型支架不会绕D点转动;若S1<S2,则会转动.

请判断该同学的解题思路是否正确,若正确,请按照该思路,写出详细的解题过程,求出结果;若不正确,请给出你认为的正确解法.

题型:单项选择题

电容器的电容允许值最大变动范围为()。

A、+10%

B、+5%

C、+7.5%

D、+2.5%

题型:单项选择题

普通单向晶闸管不能进行交流调压。

题型:单项选择题

男性,55岁,冠心病,发生急性剧烈胸骨后疼痛,血CPK明显升高,颈静脉充盈,肝大,血压下降至80/40mmHg,应诊断为()

A.冠心病合并急性心脏压塞

B.急性右心梗死

C.冠心病心力衰竭型

D.急性前壁心肌梗死伴泵衰竭

E.急性心肌梗死并室间隔破裂

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