液态烃膨胀后的体积变化比较大,当温度每升高15℃,体积增加()。
A.2.0%~7.4%
B.2.5%~7.4%
C.2.0%~8.4%
D.2.5%~8.4%
参考答案:B
Is she counting insects? [ ]
A. Yes, she does.
B. Yes, she do.
C. Yes, she is.
我们吃的白醋是由哪种生物产生的?( )
A.乳酸菌
B.酵母菌
C.醋酸菌
D.霉菌