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单项选择题
A.3%,15%
B.3%,30%
C.1.5%,15%
D.1.5%,30%
单项选择题
A.1753—8764
B.1541—7704
C.2045—8764
D.1797—7704
单项选择题
A.650,780,6,7.5
B.650,780,7,8.5
C.750,900,6,7.5
D.750,900,7,8.5
单项选择题
A.80%,70%
B.80%,60%
C.85%,70%
D.85%,60%
问答题
问答题