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【多选题】
某企业经营杠杆系数为2，财务杠杆系数为3。则下列说法正确的有（ ）。A.
如果销售量增加10%，息税前利润将增加20%
B.
如果息税前利润增加20%，每股收益将增加60%
C.
如果销售量增加10%，每股收益将增加60%
D.
如果每股收益增加30%，需销售量增加5%
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举一反三
【简答题】中药林芝中_____元素含量最丰富。
【单选题】Every year a number of students graduate from the school which will ______ new students the first week in September.
A.
enroll
B.
recruit
C.
collect
D.
reproduce
【简答题】中药林芝中什么元素含量最丰富?
【简答题】声音的数字化过程涉及三个步骤,下列________不属于三个步骤。
【单选题】At the beginning of the new term, the teacher asked several students to help _______ the new books to the students in the class.
A.
publish
B.
distribute
C.
represent
D.
treasure
【单选题】In America, colleges usually take new students according to ______.
A.
students' grades and activities in high school only
B.
students' scores of S. A.T. only
C.
both students' S.A.T. scores and records in high school
D.
students' objectives of academic study
【简答题】用户是通过（）或者程序接口向计算机发出请求的。
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