问题
单项选择题
某机械设备预计使用10年、每年使用220个台班,大修理5次、每次的大修理费用为10000元,则该设备的台班大修理费为()元。
A.2200
B.50000
C.227.27
D.22.72
答案
参考答案:D
解析:
该设备的台班大修理费=10000×5/(220×10)=22.72(元)
某机械设备预计使用10年、每年使用220个台班,大修理5次、每次的大修理费用为10000元,则该设备的台班大修理费为()元。
A.2200
B.50000
C.227.27
D.22.72
参考答案:D
解析:
该设备的台班大修理费=10000×5/(220×10)=22.72(元)
情景交际(从A---F选出合适的选项,共10分) Reporter-----R Michael------M R: __小题1:___ You just won the first prize in the photo competition. M: Thank you. R: Michael, how old are you? M: Seven. R: Seven!__ 小题2:___. M: Since I was three. R:__ 小题3:__ M: My father, And I take private lessons,too. R: Here at the photo club? M: Yes, I’ve taken lessons here for two years. R: How many days a week? M: __小题4:_____ I want to practice every day, but my parents say three or four days is enough. R: Are you going to continue your photos? M: Uh-huh. ___小题5:____ R: Wish you greater success!M: Thank you!
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