回收丁二烯塔停车检修蒸煮FeSO4溶液配置浓度要求()左右。
A.10%
B.20%
C.3%~5%
D.15%
参考答案:C
—Does Zhu Yong do _______ in English?
—Yes. And Zhu Hong is even _______.
A.good; well
B.well; good
C.good; better
D.well; better
点法与按法的区别是()
A.点法用拇指,按法用手掌
B.点法比按法刺激量小
C.点法比按法作用面积大
D.点法比按法作用面积小,刺激量大
E.点法为屈指,按法为拇指