问题 解答题

某自行车厂今年生产销售一种新型自行车,现向你提供以下信息:

(1)该厂去年已备有这种自行车车轮10000只,车轮车间今年平均每月可生产车轮1500只,每辆自行车需装配2只车轮。

(2)该厂装搭车间(自行车最后一道工序的生产车间)每月至少可装搭这种自行车1000辆,但不超过1200辆。

(3)该厂已收到各地客户今年订购这种自行车共14500辆的订货单。

(4)这种自行车出厂销售单价为500元/辆。

设该厂今年这种自行车的销售金额为a万元,请根据以上信息,判断a的取值范围。

答案

解:由题意可知,全年共生产车轮1500×12=18000只,再加上原有车轮10000只,共28000只能装配14000辆自行车.根据装配车间的生产能力,全年至少可装配这种自行车12000辆,但不超过14400辆,当然也满足不了订户14500辆的要求.因此,按实际生产要求,该厂今年这种自行车的销售金额a万元应满足:600≤a≤700.故答案为:600≤a≤700.

选择题
单项选择题

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop".

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) . She had only one small, flat bag with a few candies—fiftycent candies! I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

19()

A.made 

B.searched 

C.bought 

D.fetched