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【单选题】
TTL的555定时器接成施密特触发电路,它的电源电压为12V,5号6V,它的回差是多少?A.
8V
B.
6V
C.
3V
D.
4V
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举一反三
【单选题】He eats _______ food, so he is _______ fat.
A.
much too; too much
B.
too much; much too
C.
too much; too many
【单选题】He is ______fat because he eats ______ meat.
A.
much too, much too
B.
too much, too much
C.
too much, much too
D.
much too, too much
【单选题】It is ______ cold today and there is ______ rain. [ ]
A.
too much; too much
B.
much too; much too
C.
too much; much too
D.
much too; too much
【单选题】There is rain and it's cool this summer. [ ]
A.
much too, too much
B.
much too, much too
C.
too much, much too
D.
too much, too much
【单选题】You eat food. So you are fat. [ ]
A.
too much; much too
B.
much too; much too C. too much; too much D much too; too much
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