【简答题】如果 1 20 = 1 A - 1 B ,其中A<B,那么A÷B是______.
【简答题】已知实数a、b满足:a?b=1,那么 1 a 2 +1 + 1 b 2 +1 的值为______.
【单选题】According to common sense, people who want to buy cheaper goods should______.
A.
go to famous chain stores
B.
bargain with the shopkeeper
C.
shop at the biggest supermarket
D.
compare prices at different shops
【判断题】在任何情况下,“预收账款”项目都是根据“应收账款”、“预收账款”账户的明细账计算填列。
【判断题】在任何情况下,应收账款项目都是根据应收账款总账的期末余额填制。
【简答题】如果 1 19 = 1 A - 1 B ,其中A<B,那么A÷B是______.
【简答题】如果A:B=1 ,那么A×( )=B×( )。