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【单选题】
以下使用移液器的做法错误的是?A.
移液器如不使用，要把移液枪的量程调至最大值的刻度，使弹簧处于松弛状态以保护弹簧
B.
千万不要将按钮旋出量程，否则会卡住内部机械装置而损坏了移液枪
C.
为了使枪头卡紧，可以在装上枪头后再在枪头盒上敲几下
D.
使用时要检查是否有漏液现象，方法是吸取液体后悬空垂直放置几秒中，看看液面是否下降
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举一反三
【单选题】Judging from the three new roles envisioned for tomorrow's university faculty, university teachers ______.
A.
are required to conduct more independent research.
B.
are required to offer more course to their students.
C.
are supposed to assume more demanding duties.
D.
are supposed to supervise more students in their specialty.
【单选题】The oldest university in New Zealand is
A.
the University of Edinburgh.
B.
the University of Auckland.
C.
the University of Otago.
D.
Harvard University.
【单选题】The oldest university in New Zealand is ________.
A.
Auckland University
B.
Canterbury University
C.
Wellington University
D.
Otago University
【单选题】San Diego State University (SDSU) is a major American university. The university offers a wide range of programmes covering many fields, including Business Administration, Engineering, Public Health, ...
A.
enrollment.
B.
language classes.
C.
GMAT preparation.
D.
course options.
【单选题】In the summer, people at Augusta State University are busy
A.
moving the university to a new campus.
B.
negotiating about the combination.
C.
cutting the budgets for the gloomy economy.
D.
getting the new university ready for students.
【简答题】555 定时器的 TH 端、 TR 端的电平分别小于 2/3V cc 和 1/3V cc ,定时器的输出状态是 。
【单选题】听力原文：W: Good morning, this is Ann broadcasting from university radio. In the local news this morning, the mountain-lake cycle tour is about to begin, and in the studio we have with us Robin, president...
A.
In the radio studio.
B.
In the bicycle shop.
C.
On the road.
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