配比原则要求一个会计期间内的各项收入和与其相关联的(),应当在同一会计期间内予以确认、计量。
A、成本、费用
B、支出、费用
C、成本、收入
D、支出、收入
参考答案:A
根据课文内容,判断下列句子正误,正确的写"T",错误的写"F"。
( ) 1. Grandma phoned Amy on Sunday.
( ) 2. Grandma cooked chicken for lunch.
( ) 3. Grandma and Grandpa walked in the park.
( ) 4. Sam helped his mother.
( ) 5. Amy played on the computer.
( ) 6. Dad watched TV.
( ) 7. Tom helped his mother.
( ) 8. Amy did her homework.
已知函数f(x)=exlnx.
(1)求函数f(x)的单调区间;
(2)设x>0,求证:f(x+1)>e 2x﹣1;
(3)设n∈N*,求证:ln(1×2+1)+ln(2×3+1)+…+ln[n(n+1)+1]>2n﹣3.