对于有机难溶药剂,冬季配制时要用温水40~50℃,待药剂溶解完后继续搅拌()方可投入药剂罐。
A.10min
B.20min
C.30min
D.40min
参考答案:C
_______ millions of fans, David Beckham is encouraging more and more people to go in for soccer since the late 1990s.
A.To fascinate
B.Fascinating
C.Fascinated
D.Being fascinated
有两个均能满足生产需求的施工方案可供选择,在两方案均需增加投资时,应选择()的方案。
A.价值系数小
B.工程成本低
C.折算费用低
D.台班产量高