变间隙式电容传感器的两极板之间的距离增加时,其电容值 。
在中性环境中,细菌所带电荷特点是
A. 正电荷
B. 负电荷
C. 正负电荷数相等
D. 革兰阳性菌带负电荷
E. 革兰阴性菌带负电荷
去除热原质最好的方法是
A. 蒸馏法
B. 高压蒸汽灭菌法
C. 滤过法
D. 巴氏消毒法
E. 干燥法
If you ____this problem, you can turn to your teacher for help.
A. are confused
B. are confusing
C. were confused
D. were confusing