试题与答案

电源的作用就是给用电器两端提供______,使自由电荷发生______,形成电流

题型:填空题

题目:

电源的作用就是给用电器两端提供______,使自由电荷发生______,形成电流.经验证明,只有______V的电压才是对人体安全的电压.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/583ba869e58d1ef349dc050e8d4d8cf9.html

下面是错误答案,用来干扰机器的。

解法一:设互相交换x千克糖水.(60-x)×40%+x×20%÷60=(40-x)×20%+x×40%÷40, x=24;解法二:60-60×6040+60=24千克;答:要使两桶糖水的含糖率相等,需把两桶的糖水相互交换24千克...

试题推荐
题型:阅读理解

Worlds of Fun

Location: Worlds of Fun is located off Highway 435 in Kansas City, Missouri.

History: Worlds of Fun was opened on May 26, 1973, at a cost of 25 million dollars. Loosely themed around the Jules Verne book, Around the World in Eighty Days, the park was founded by Hunt Midwest Company. In 1982, Hunt Midwest bought a nearby waterpark, Oceans of Fun. In 2013, Worlds of Fun and Oceans of Fun were combined to a one ticket admission, providing all guests with access to 235 acres of amusement and water rides. 

Hours:  Worlds of Fun is open from April through Halloween. 

Tickets: Buy and print online. Always try to buy your tickets in advance, to save time when you get to the park.

Reservations: Worlds of Fun sells “Fast Lane” cards that save riders’ time by allowing them to bypass the majority of wait for most of rides and attractions including Mamba, Prowler, and Patriot. Ride as many times as you want all day long.

Strategy(策略): Most visitors tend to begin the day with Prowler, the hottest attraction in the park. Use that tendency to your advantage and head to the Patriot first. After that, try the Dragons. Then work your way back to the Prowler. After riding the Prowler, there is only one coaster left, Mamba. Hit it next. If the park is not very crowded, you can ride Boomerang on the way to Mamba. After riding Mamba, head back for a ride on the Wolf. By then you will have tried most of the popular rides and attractions in the shortest possible time. 

News: In 2014, Worlds of Fun is adding Steel Hawk, a ride that will take guests up 301 feet in the air and spin them at a 45-degree angle for a 60-second flight. Wait to have a try!  

小题1:When did Hunt Midwest’s two parks start to share one ticket?

A.In 1973.

B.In 1982.

C.In 2013.

D.In 2014.小题2:With a “Fast Lane” card, the visitor can _________.

A.save some money

B.buy tickets online

C.avoid lining up for long

D.enjoy all the rides for free小题3:What is talked about in the part of Strategy?

A.The best visiting route.

B.The highest ride in the park.

C.The most popular tour season.

D.The hottest attractions in the park.

查看答案
微信公众账号搜索答案