在图所示的电路中,请用笔线代替导线将定值电阻R与滑动变阻器以某种方式连接。要求:

题型:应用设计题

问题:

在图所示的电路中,请用笔线代替导线将定值电阻R与滑动变阻器以某种方式连接。要求:闭合电键S后,不移动变阻器滑片P的位置,使得电流表的示数最小。

考点:滑动变阻器
题型:应用设计题

瓶中装满水时称其质量为88g,若再装入10g砂粒,水溢出后,把瓶的外部擦干,称其质量为94g。求砂粒的密度。

题型:应用设计题

保护环境的营养措施有哪方面?

题型:应用设计题

Part 4


Questions 26-45


·Read the following article and choose the best word for each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.

iPhone Left in Hot Car for Three Hours


The normally peaceful suburban town of Winnetka is still reeling following the news Monday (26) a local resident, whose name is being (27) by police pending a full investigation, left an iPhone unattended for more than three hours in a car (28) in the hot sun.
"Responding to calls from (29) . passersby, who observed the iPhone sitting in a vehicle in the parking (30) of the Westfield Shopping Center, police arrived on the (31) at approximately 4 p.m. and immediately intervened to save the device," said Winnetka police chief Douglas Blaine. "Security cameras have shown that the iPhone had been in the car— with the doors (32) and the windows rolled (33) —since 1 p.m. Due to the tragic and highly emotional (34) of this case, we cannot say any (35) at this time."
According to official police records, two officers forcibly (36) into the car at 4:07 p.m. and found the iPhone (37) face down on the dashboard. The iPhone at first showed no (38) of life, but after a tense few seconds, officers were able to wake it and get it to (39) to a series of simple touch commands. Police said that if the iPhone were left in the extreme (40) for any longer, it could have died.
The iPhone was rushed by ambulance to a nearby Apple facility for careful (41) .Miraculously, no damage to its memory, screen, or wireless capabilities was reported.
Upper-middle-class suburbanites from all over the North Shore area have reacted to the near-tragedy with an unprecedented outpouring of (42) . Hundreds of cards and letters have come streaming in, and local talk radio shows have been flooded (43) calls demanding that the iPhone’s (44) be prosecuted. Many have come forward offering to take the iPhone into their custody, and still (45) have donated free downloads, ringtones, and MP3s to the victimized object.

A.laying

B.lying

C.lain

D.lie

题型:应用设计题

从责任保险的发展实践来看,保险人是通过规定最高限额来承担最大赔偿责任的,这个最高限额通常被称为( )。

A.保险金额
B.免赔限额
C.保险责任
D.赔偿限额

题型:应用设计题

给水监督硬度的目的是什么?

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