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【单选题】
在共射、共集、共基三种基本放大电路中,电压放大倍数小于 1 的是( )电路 。A.
共射
B.
共集
C.
共基
D.
任意组态
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【判断题】高压蒸汽灭菌一般采用0.105Mpa的压力,温度达121.3°C,维持15~30min,可杀灭包括细菌芽孢在内的所有微生物。这个说法是否正确( )。
A.
正确
B.
错误
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【单选题】(), the number of private cars will increase sharply in the coming couple of years.
A.
Undoubtedly
B.
Doubtedly
C.
Undoubted
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