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【多选题】
下列那些属挥发性酸A.
硫酸
B.
碳酸
C.
磷酸
D.
β-羟丁酸
E.
乳酸
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反馈参考答案：
举一反三
【简答题】Mr. Lewis was a dance teacher. He was a nice man and always had a lot of students. One year he moved to a new town, and was soon teaching many students in the dance school there, but he decided to mov...
【单选题】环外快速环路以外地区的道路防护绿地的宽度要求,快速路的城镇区段( ),其他地区( )。
A.
30m;40m
B.
30m;50m
C.
20m;40m
D.
20m;50m
【判断题】There won’t be a lot of job opportunities in technological fields this decade in the U.S. ( )
A.
正确
B.
错误
【单选题】He’s got a lot to do there, so he won’t be back _____ tomorrow.
A.
at
B.
since
C.
until
D.
by
【简答题】Fill in the blanks with the words you hear. A man named Eric is planning a trip and looking for an ( 1)_____________ . He is advised of four places. The first one has a free parking lot and also a ( 2...
【简答题】Mr. Lewis was a dance teacher. He was a nice man and always had a lot of students. One year he moved to a new town, and was soon teaching many students in the dance school there, but he decided to mov...
【简答题】《中国药典》规定，微温系指（）℃，室温系指（）℃，溶出度测定规定溶出介质的温度应为（）℃，用高氯酸滴定样品时，室温应在（）℃以上进行。
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