属于常用的机械清蜡方法的事()。
A.热水洗井
B.加防蜡剂
C.加清蜡剂
D.刮蜡片清蜡
参考答案:D
Passage 3
How much is average per-share earnings for the year as expected by the analysts a. $1.14 b. $1.17 c. $4.65 d. $4.67