用三针量法测量螺纹中径是一种（）的方法。
A、精度较低
B、精度较高
C、精度不高
D、精度很高
参考答案：B
--- What shall we do this weekend, Julie?
--- _____. Whatever you want to do is OK with me.
[ ]
A. All right
B. It just depends
C. It’s up to you
D. Glad to hear that
薄膜电极由阴极、阳极、电解液和（）组成。
A.电解质
B.薄膜
C.导线
D.显示部分
