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【单选题】
听力原文：W: Can I help you? M: Yes, I'd like to read some articles that are on reserve in the library for psychology 319. W: Professor Gilers' class? M: That's right. How could you know? W: Let's just say you are not the first person coming in asking for those articles. M: Oh, well, seeing as how I haven't read any of them yet, it doesn't really matter which one you give me first. W: I'm afraid I can't give you any of them at the moment. They've all been checked out. M: You're kidding, all of them? W: Every last one. I've asked Professor Gilers twice already to bring in additional copies of the articles, but no sooner do I place them on the shelves than they are gone. See that girl in the black sweater? She's been waiting for half an hour for these same articles to be returned. M: And here I went out of my way to free out the whole afternoon to read. W: I'm sorry, but there is not a whole lot I can do about it. All I can suggest is that you come in first thing tomorrow morning and try again, we open at eight. M: Thanks for your help. (20)A.
That the library opens at 8:00.
B.
That no one else has read the articles.
C.
That none of the material he needs is available.
D.
That reserve materials can be taken out of the library.
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举一反三
【单选题】在实际应用中,当行星齿轮机构处于何种状态时,才能获得倒挡。
A.
行星架制动，齿圈主动
B.
行星架主动，太阳齿轮制动
C.
齿圈制动，太阳齿轮主动
D.
太阳齿轮主动，行星架制动
【简答题】当汽车直线行驶时,行星齿轮只有( )而无( )。
【简答题】根据记忆内容的性质可以将记忆分为陈述性记忆和（ ）。
【单选题】在单排单行星轮式行星齿轮机构中，当( )时，可以获得超速挡。
A.
齿圈制动，行星架主动
B.
行星架主动，太阳轮制动
C.
齿圈制动，太阳轮主动
D.
太阳轮主动，行星架制动
【简答题】行星齿轮变速装置包括行星齿轮变速机构和（）机构。
【单选题】During bankruptcy proceedings of a firm, the priority of claims was not strictly adhered to. Which of the following is the least likely explanation for this outcome?
A.
Senior creditors compromised
B.
The value of secured assets was less than the amount of the claims
C.
A judge’s order resulted in actual claims not adhering to strict priority of claims
【多选题】行星齿轮机构与外啮合齿轮机构相比具有( )优点。
A.
所有行星齿轮均参与工作,都承受载荷,行星齿轮工作更安静,强度更大。
B.
行星齿轮工作时,齿轮间产生的作用力由齿轮系统内部承受,不传递到变速器壳体,变速器可以设计得更薄、更轻。
C.
行星齿轮机构采用内啮合与外啮合相结合的方式,与单一的外啮合相比,减小了变速器尺寸。
D.
行星齿轮系统的齿轮处于常啮合状态,不存在挂档时的齿轮冲击,工作平稳,寿命长。
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