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【单选题】
PN结具有( )导电特性。A.
单向;
B.
不导电;
C.
双向;
D.
不定性
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举一反三
【简答题】完整的气压传动系统包括气源装置、(_______________)、(_______________)和(_______________)四部分。
【单选题】You will see what is happening in the bull ring. Which of the following sentences contains the word “ring” that has the same part of speech and means the same as that in the above sentence?
A.
The third finger is also called ring finger.
B.
Thousands of demonstrators ringed the building.
C.
The boxers are fighting fiercely against each other in the boxing ring.
D.
As the bell rings, the students are heading for the classroom.
【简答题】CAD 2012经典工作界面主要有哪几部分构成?
【单选题】— What were you doing when Tony phoned you?
A.
I had just finished my work and________ to take a shower.
B.
had started
C.
started
D.
have started
E.
was starting
【单选题】— What were you doing when we were playing basketball yesterday afternoon? — I ______ the classroom.
A.
was cleaning
B.
have cleaned
C.
will clean
D.
clean
【单选题】What were you doing when I you ?
A.
am telephoning
B.
telephone
C.
was telephone
D.
telephoned
【单选题】What were you doing yesterday afternoon?
A.
I am reading a book.
B.
I listened to music.
C.
I will listen to music.
D.
I was reading a book.
【简答题】What were you doing?
【简答题】Write down the right figure of speech: It is a figure of speech which contains a deliberate exaggeration
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