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【简答题】
电路如图所示。 (1) 第一级电路是 1 差分放大电路 (2) 第二级电路的放大管是 2 。 (3) 图中,T9、T10构成 3 。 (4)图中,D1,D2的作用是 4 。 (5)两个输入端同相输入端是 5 。 (6)电流源I2的作用是 6 。
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举一反三
【单选题】-------How many students are there in the classroom? ------- ________ .They are all on the playground.
A.
No one
B.
None
C.
Nobody
D.
Everyone
【单选题】----How many students are there in your class? ---- __________ number of the students in our class __________ 40.
A.
The , is
B.
The, are
C.
A, is
D.
A, are
【单选题】—How many students are there in your school? — ___________ the students in our school over two thousand. [ ]
A.
The number of;is
B.
The number of;are
C.
A number of;is
D.
A number of; are
【简答题】— How many students are goingto the Great Wall? — ____. A.None B. No one C. No D. Not any
【简答题】How many new students have been taken in this year? ______ new students.
【简答题】How many students are learning the leading 15 languages?
【单选题】____________ students are there in your class? [ ]
A.
How many
B.
How much
C.
How old
【简答题】看图回答问题。 1. How many pencils are there? ___________________________________ 2. How many brushes are there? ___________________________________ 3. How many stamps are there? ____________________________...
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