皮皮学,免费搜题
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【简答题】
Fill in the blanks by selecting suitable words from the Word Bank. You may not use any of the words more than once. University students come from different parts of the country with various purposes. However, a closer look at their reasons for studying at the university will enable us to (1)________them roughly into three groups: those who have a(n) (2)_________for learning, those who wish to (3)________a bright future, and those who learn with no definite purpose. Firstly, there are many students who learn simply because they (4)________ their goal of learning. Some read a wealth of British and American novels because they are keenly interested in literature. Others sit in front of the computer screen, working on a new program, (5)_________ day and night, because they find some computer programs (6)___________, and they dream of becoming a "Bill Gates" one day. Secondly, there are students who work hard mainly for a better and more (7)__________ future. It seems that the majority of students fall into this group. After admission to the university, they read books after books to (8)_______ knowledge from all of the resources which are (9)_________to them, and finally, to succeed in the future job market. Thirdly, there are still some students who learn without a clear goal. They take courses, finish homework, enjoy life on campus, but don't want to (10)______ anything new or challenging. They have no idea what they will be doing after college. And they may end up with nothing in their lives.
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A.
正确
B.
错误
【单选题】已知某放大电路电压增益的频率特性表达式为: (式中 f 的单位为 Hz ) 试求该电路的上限频率。
A.
50kHz
B.
100kHz
C.
150kHz
D.
200kHz
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A.
25Hz
B.
20Hz
C.
15Hz
D.
10Hz
【判断题】投影寻踪属于新兴统计建模。
A.
正确
B.
错误
【单选题】已知某放大电路电压增益的 频率特性表达式为:( 式中 f 的单位为 Hz ) 试求该电路的下限频率。
A.
25 Hz
B.
20 Hz
C.
15 Hz
D.
10 Hz
【单选题】(单选)以下IEEE标准中,规定了流量控制标准的是
A.
802.1q
B.
802.3u
C.
802.3z
D.
802.3x
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A.
rains
B.
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C.
was raining
D.
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【单选题】已知某放大电路电压增益的 频率特性表达式为:( 式中 f 的单位为 Hz ) 试求该电路的中频电压增益的分贝数。
A.
40 dB
B.
20 dB
C.
-40 dB
D.
-20 dB
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