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依法必须进行招标的项目,其招标活动不受地区或部门的限制。()

A. 正确
B. 错误

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随着回采工作面的推进,逐步用充填料充填采空区的采矿方法叫充填采矿法,有时还用支架与充填料相配合,以维护采空区。充填采空区的目的,主要是利用所形成的充填体进行地压管理,以控制围岩崩落和地表下沉,并为回采创造安全和便利的条件。充填采矿法也有多种,下列关于这些方法的说法中不正确的是()。

A. 单层充填采矿法。此法适用于缓倾斜薄矿体,在矿块倾斜全长的壁式回采面沿走向方向、一次按矿体全厚回采,随工作面的推进、有计划地用水力或胶结充填采空区,以防顶板崩落
B. 上向水平分层充填采矿法。此法一般将矿块划分为矿房和矿柱,第一步回采矿,第二步回采矿房。回采矿房时,自下向上水平分层进行,随着工作面向上推进,逐层充填采空区,并留出继续上采的工作空间。充填体围护两帮围岩,并作为上采的工作平台。崩落的矿石落在充填体的表面上,用机械方法将矿石运至留井中。矿房采到最上面分层时,进行接顶充填
C. 上向倾斜分层充填采矿法。这种方法与上向水平分层充填法的区别是,用倾斜分层回采,在采场内矿石和充填料的搬动主要靠重力
D. 下向分层充填采矿法。这种方法适用于开采矿石很不稳固或矿石和围岩均很不稳固,矿石品位很高或价值很高的有色金属或稀有金属矿体。这种采矿方法的实质是从上往下分层回采和逐层充填,各分层的回采由上一层假顶保护

听力原文:W: Good afternoon. ABC Apartments. May I help you?
M: Yes, I'm interested in renting a one-bedroom apartment. Do you have any available?
W: No, I'm sorry. None are available at this time, but I expect a vacancy in about three weeks. Could I interest you in a two-bedroom?
M: Well, I'm a student and I have to cut corners. How much more would a two-bedroom apartment cost me?
W: This one-bedroom rents for $150 a month and the two-bedroom is only 35 dollars more.
M: Is the two bedroom a great larger than the one-bedroom?
W: Yes, it is. Also, I might tell you that the one-bedroom doesn't have a dishwasher. All of our two-bedroom apartments do.
M: What about signing a lease?
W: We do require a 6-month lease, and there is a deposit of $100 in case any damage is done to the apartment.
M: When could I see an apartment?
W: How about later this afternoon? Let's see. I have an appointment at half past three and another at four. How about five o'clock this afternoon?
M: That would be fine. I'll pick my wife up from work and we'll come right over.
W: I'll be looking forward to seeing you then.
M: Thank you. Good bye.
Which of the following is NOT mentioned as a difference between the one-bedroom and two-bedroom apartments?

A. The one-bedroom apartments are available whereas the two-bedroom ones are not.
B. The two-bedroom apartments are equipped with dishwashers.
C. The two-bedroom apartments are far larger than the one-room ones.
D. The one-bedroom apartments rent 35 dollars less than the two-bedroom ones.

竣工日期是指发包人承包人在协议书约定,承包人完成承包范围内工程的绝对或相对的日期。()

A. 正确
B. 错误

听力原文: An advertisement says "Learn English in six weeks, or your money back". Of course, it never happens quite like that. As we know, no language is easy to learn except one's mother tongue. And think how much practice that gets. Before the Second World War people usually learn English in order to read English literature. Now most people want to speak English. Every year many millions of people start to learn English. How do they do it?
Some people try at home, with books and tapes, some use radio or television programs, others go to school or attend evening classes. Nowadays people even may use the Internet or various computer soft wares to study English. If they use English only two or three times a week, it will take a long time to learn it, like English learning at school. A few people try to learn English fast and study six or more hours a day. It is clearly easier to learn English in England, Canada, Australia or the United States. However, most people cannot afford this, and for many it is not necessary. They need English in order to do their work better. For example, most scientists and engineers chiefly need to be able to read books and reports in English. Whether English is learnt quickly or slowly, it is hard work. Good teachers, books and machines will help, but they cannot do the student's work for him.
What does an advertisement say about English learning?

A. English is the easiest language to learn.
B. English is as easy to learn as your mother tongue. '
C. English can be learnt in six weeks.
D. It is easier to learn English on radio or TV.

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