What products does the facory make?
A. glass ware
B. enamel ware
C. ceramic ware
D. stainless steel utensils
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— Where is the factory?— It is in __________ .
Austria
B. Australia
C. America
D. Argentina
Which statements can be used when visiting a wine manufacturer?
A. We are interest in learing about your pack-aging process.
B. It was very kind of you to give me a tour of the plant.
C. We look foward to hear from you soon.
D. Let me give you a list of departments first.
—— What's your usual percentage of rejects?—— _____________________ .
A. We put it on the market just two monthes ago.
B. One thousand uint per month now.
C. About 2% in normal operations.
D. No one can match us as far as the speed is concerned.
下列属于β-内酰胺类药物的性质的是（）。
A. 水溶性
B. 旋光性
C. 不稳定性
D. 水解性
E. 以上都是
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