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【简答题】
如何区别等温转变的体和回火体?
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皮皮学刷刷变学霸
举一反三
【单选题】鲁滨逊在岛上得了什么病?( )
A.
肠炎
B.
胃炎
C.
疟疾
D.
感冒
【单选题】---Why weren’t you at the meeting? ---I ____ an important visitor from the UK in my office.
A.
expected
B.
had been expecting
C.
was expecting
D.
had expected
【单选题】—Why didn’t you come to the party yesterday? ---I would , but an unexpected visitor ___ to see me.
A.
would come
B.
had come
C.
was coming
D.
came
【判断题】无论是哪种三极管,当处于放大工作状态时,基极电位总是高于发射极电位,集电极电位也总是高于基极电位。
A.
正确
B.
错误
【单选题】A: Tom, why didn't you come to the class yesterday? B: ______
A.
I had crone, but there was a visitor at home.
B.
I was going to, but I had an unexpected visitor.
C.
No way, as a visitor was coming to visit me.
D.
I'm sorry. I won't miss the class again.
【单选题】—Why weren't you at the meeting? —I ( )an important visitor from the UK in my office.
A.
am expecting
B.
had been expecting
C.
was expecting
D.
had expected
【单选题】---Alice, why didn’t you come the other day ? . ---I______, but I had an unexpected visitor.
A.
had
B.
would
C.
was going
D.
did
【单选题】-Why didn't you come to the concert last night? -I_________,but I had an unexpected visitor. [     ]
A.
meant to
B.
meant
C.
had meant to
D.
had meant
【判断题】无论是哪种三极管,当处于放大工作状态时,基极电位总是高于发射极电位,集电极极电位也总是高于基极电位。
A.
正确
B.
错误
【单选题】在荒岛上鲁滨逊得了一场大病是()。
A.
肝炎
B.
肺热
C.
疟疾
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