氧化锆氧量计是由（）组成的。
A.锆管
B.锆头
C.转换器
D.二次表
参考答案：B, C, D
施放烫发液需要涂（）遍.
A.施放1遍
B.连续施放2遍
C.间隔施放2遍
D.随便几遍
The ______ in a news report normally represents briefly the five Ws: when, where, what, who and how.
A. headline B. storyC. lead D. conclusion
