万用表测量电压时,应()测量结果较准确。
A、使指针在中间附近
B、使指针在1/2以下区域
C、认真读数
D、使指针在2/3以上区域
参考答案:D
— Miss Gao has ______ free time than Mr Green.
— I think so. She is busy every day. [ ]
A. much
B. less
C. more
D. fewer
果胶主要作为果酱与果冻的胶凝剂。还可作增稠剂和稳定剂。