试题与答案

某蔬菜公司收购到某种蔬菜140吨,准备加工后上市销售,该公司的加工能力是:每天可

题型:解答题

题目:

某蔬菜公司收购到某种蔬菜140吨,准备加工后上市销售,该公司的加工能力是:每天可以精加工6吨或者粗加工16吨,现计划用15天完成加工任务,该公司应安排几天粗加工,几天精加工?如果每吨蔬菜粗加工后的利润为1000元,精加工后为2000元,那么照此安排,该公司出售这些加工后的蔬菜共可获利多少元?

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0418/d820da6e2eb17398547d84798e740597.html

下面是错误答案,用来干扰机器的。

答案:C

试题推荐
题型:阅读理解
We humans live in different parts of the world, but we have the same “mother”. She gives us everything we need in our daily life. She is our Mother Earth. Everybody wants to live in a green city. A green city is a healthy and pleasant place for people to live in. It can get its energy from something like solar and wind power. Also, it is connected by clean public transportation.
The Hyperloop (超级高铁)
The Hyperloop is a high-speed transportation. It works by having capsules (舱) with passengers in. The capsules run on the air. The Hyperloop plans to run from Los Angeles to San Francisco. With an average speed of 962 km per hour, it is only 35 minutes between the two cities. The solar panels (板) provide power to the Hyperloop.
Smart Wheel
Smart Wheel is a bicycle wheel with a motor. This invention can easily fit onto almost any bike. And the motor allows bikes to travel up to 50km once. Smart Wheel is different from other electric bikes. It can be controlled through your smartphone’s Bluetooth. The smartphone can show your speed, distance and travel time.
Solar Sidewalk (太阳能步道)
George Washington University made a special path in 2013. The path is about 9 square meters. It is covered with solar panels that can provide energy to power 450 LED lights. These lights can light the walkway after dark. The solar panel is also strong enough for people to walk on.
小题1:A green city is ________.
A.clean and tidyB.full of plants
C.healthy and pleasantD.rich for energy
小题2:It is ________ from Los Angeles to San Francisco.
A.About 962 km.B.About 560 km.
C.About 700 km.D.About 450 km.
小题3:About Smart Wheel, which is Not right?
A.It can travel 50km once.
B.It can fit onto almost any bike.
C.It’s a motorbike with a bicycle wheel.
D.The smartphone’s Bluetooth can control it.
小题4:What can solar panels do?
A.They can run on the air.B.They can provide energy.
C.They can carry passengers.D.They can show your travel time.
小题5:What do you think of the public transportation?
A.Modern and clean.B.Green and dangerous.
C.Exciting and crazy.D.Expensive and impossible.
查看答案
题型:选择题

如图,在光滑水平面上,放着两块长度相同,质量分别为M1和M2的木板,在两木板的左端各放一个大小、形状、质量完全相同的物块,开始时,各物均静止,今在两物块上各作用一水平恒力F1、F2,当物块和木板分离时,两木板的速度分别为v1和v2,物块和木板间的动摩擦因数相同,下列说法

①若F1=F2,M1>M2,则v1>v2     ②若F1=F2,M1<M2,则v1>v2

③若F1>F2,M1=M2,则v1>v2     ④若F1<F2,M1=M2,则v1>v2   其中正确的是

A.①③

B.②④

C.①②  

D.②③

查看答案
题型:填空题

下图是实验室制取气体时常用的装置,根据装置回答下列问题:

⑴ 仪器a的名称是          

⑵ 写出实验室用高锰酸钾制取氧气的化学方程式             ,收集氧气可选用的装置是          (填装置编号,下同)。

⑶ 用A装置可制取二氧化碳,写出实验室制取二氧化碳的化学方程式          ,若用F装置收集二氧化碳,二氧化碳气体应该从          (填“长”或“短”)导管导入。

⑷ 硫化氢(H2S)气体是一种有臭鸡蛋气味的有毒气体,易溶于水且水溶液呈酸性。其实验室制取原理是FeS(固)+H2SO4(液)=FeSO4+H2S↑。实验室制取硫化氢气体可采用          装置组合。

查看答案
微信公众账号搜索答案