题目内容

某企业购进一台机器,价格为20万元,预计使用5年,残值率为5%,采用双倍余额递减法计提折旧,则第4年计提的折旧为()万元。

A. 1.66
B. 1.728
C. 2.16
D. 2.4

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设n为正整数,在1与n+1之间插入n个正数,使这n+2个数成等比数列,则所插入的n个正数之积等于().

A. (1+n)n/2
B. (1+n)n
C. (1+n)2n
D. (1+n)3n
E. 以上答案均不正确

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W: Oh, good. I really feel nervous.
Q: What do we know about the woman?
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A. She is having a headache.
B. She thinks the man is nervous.
C. She wants to leave.
D. She is waiting for the doctor.

When does Thanksgiving Day fall?

A. It falls on Oct 30.
B. It falls on Dec 24.
C. It falls on March 21.
D. It falls on the fourth Thursday of November.

设a,x,y,b依次成等差数列,c,x,y,d依次成等比数列,其中y>x>0,则有().

A. (a+b)2=2cd
B. (a+b)2<2cd
C. (a+b)2>4cd
D. (a+b)2<4cd
E. 以上答案均不正确

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