混凝上采用的碎(砾)石最大粒径不宜大于( )。A.20mm B.30mm C.10

题型:单项选择题

问题:

混凝上采用的碎(砾)石最大粒径不宜大于( )。

A.20mm

B.30mm

C.10mm

D.15mm

考点:一级建造师市政公用工程市政公用工程管理与实务
题型:单项选择题

在社会生活中,人们总有各种需要得不到满足,愿望和目标的实现受到阻碍的时候,或有遇到天灾人祸的打击而遭受挫折的时候。这说明 [ ]

A.人们的需要太高

B.挫折是普遍存在的,不可避免的 

C.人们的社会生活需要挫折

D.人的一生充满了挫折 

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简述影片拷贝的日常管理.

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对于原发性甲状腺功能亢进病人,下列哪项是正确的 ()

A.TT3、TT4下降,TSH升高

B.TT3、TT4下降,TSH下降

C.TT3、TT4升高,TSH升高

D.TT3、TT4升高,TSH下降

E.TT3、TT4升高,TSH正常

题型:单项选择题

阅读理解。

     Is learning a foreign language ever easy? Yes. If you are five and move to another country, you will

quickly pick up the language. But what about for the rest of us who are no longer five, and need to be

polite when traveling for business or for pleasure? I think that answer is also yes. Language learning can

be easy if you don't want or need to learn too much. 

    The key to successful language learning in my mind is not to set the goal too high. It is rather like

running. Even if you run twice a week, you don't necessarily want to be able to run a marathon. You

might just want to maintain a level of fitness. I think the same can be true for language learning.

     Let's get back to the goal. If you decide to learn ten words in a foreign language before visiting the

country, you know that you will manage to do this. However, if you decide to attain conversational

fluency, unless you are an exceptionally talented individual, you will probably fail and give up in disgust.

     It is also far easier to start learning a foreign language than to finish. In other words, the better you

are, the slower it can be to improve, because you will get stuck with grammar, making sentences,

learning less common words, etc. If you are only trying to learn a few foreign words and phrases, you

will enjoy faster progress, have more fun, and won't have to spend too much time. 

    The idea of learning only a few hundred words in a language, and then stopping, isn't the usual

approach to language learning, but it can be a very rewarding and entertaining activity.

1. In the writer's opinion, it is easy for adults to learn English if _____. [ ]

A. they are especially talented individuals

B. they don't want or need to learn too much

C. they have to spend a lot of time on it

D. they have a chance to go abroad

2. The writer intends to express that learning only a few hundred words in a language, and then

    stopping, _____. [ ]

A. is the usual method of learning a language

B. is of no use for learning a language

C. may cause a lot of mistakes while traveling

D. can be rewarding and entertaining

3. The writer believes that if you want to be good at a foreign language, you will probably _____. [ ]

A. forget your own goals

B. become a gifted language learner

C. get tired of learning it

D. reach your learning goal in advance

4. The best title of this passage would be _____. [ ]

A. Easy Language Learning

B. Hard Language Learning

C. Fluency in a Foreign Language

D. A Method of Language Learning

题型:单项选择题

世界遗产总部于何年于巴黎成立?()

A.1989年

B.1990年

C.1991年

D.1992年

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