pH计中的测量电极是属于()。
A.酶电极
B.气敏电极
C.固体膜电极
D.离子交换电极
E.汞电极
参考答案:D
29. Everybody talks about the taste of great food, but hardly _________ about the tongue and
the nose that make the tasting possible.
A.anybody talks
B.does anybody talk
C.talks anybody
D.nobody talks
厂区绿化布置是总平面设计的一个组成部分。厂区绿化是环境保护的重要措施,有调节空气、美化环境的作用。工厂的绿地率一般要求不小于()。
A.10%
B.20%
C.30%
D.35%