Which of the following is not the reason for English couples divorce？
A. Mrs. Turner moved the furniture for 38 years.
B. Mr. Turner could not bear her.
C. Mr. Turner had committed adultery since January.
D. Mrs. Turner refused to stop the moving of furniture.
The United Sates ranks______ in the export of rice in the world.
A. the first
B. the second
C. the third
D. the fourth
已知一台挖掘机的技术生产能力QT=260m3/小时，每班工作时间T为8小时，班工作时间利用系数η=0.65，求这台挖掘机的实际班产是多少？
在用湿法制颗粒阿司匹林剂时常加入适量的酒石酸是为了
A. 增加稳定性
B. 改变流动性
C. 使崩解更完全
D. 润湿剂
E. 崩解剂
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