小刚同学在探究串联电路电压规律的实验中,提出了猜想:串联电路中各用电器两端的电压

题型:实验题

问题:

小刚同学在探究串联电路电压规律的实验中,提出了猜想:串联电路中各用电器两端的电压相等,总电压等于各部分电压之和.他准备了两只相同的灯泡L1、L2和其它实验器材。

连接好电路,闭合开关,用电压表分别测出AB、BC、AC 间的电压,并记录在表格中。

(1)在物理学中,串联电路电压的特点是:                    。(字母表达式)

(2) 写出该实验一点的不足之处                                       

(3)王海同学用电流表测量电流时,把电流表串联接入电路后闭合开关,发现指针偏转如图甲所示,产生这种情况的原因是                          ;另一同学测量时,则发现指针偏转如图乙所示,产生这种情况的原因是                       

考点:并联电路的电压规律串联电路的电压规律
题型:实验题

滤液泵停泵后,要关闭()和冷却水。

题型:实验题

在PC中引起中断的中断源通常分为5种类型,分别是:I/O中断、( )、时钟中断、故障中断和程序中断。

A.硬中断

B.软中断

C.奇偶检验错中断

D.数据通道中断

题型:实验题

商业拍卖公司的作用不仅仅是促进所有权的转移。

题型:实验题

How many of us would temp for three years while we waited for the perfect job Not many of us, perhaps. But Wentworth Miller, the "Prison Break" star, said he chose to wait even longer time (1) he found the right job.
"Actually I think it might have been three or four years until I was lucky enough to get guest (2) on TV shows," said Miller, 34, who rose to international stardom (3) to "Prison Break" in 2006. That kind of patience and p will was portrayed in "Prison Break". Miller (4) engineering wizard Michael Scofield, who tries everything to break out of a Chicago (5) with his brother. Miller said he was fond of his character, (6) he said "exists in shades of grey".
Miller comes from a (7) of teachers. He said he didn’t seem fated for a career in the arts, (8) his passion for acting. After (9) from Princeton with an English degree, he moved (10) his parents’ request to Los Angeles to look for a stable life. He started (11) in a little company that made television movies. This (12) simply faxing, filing, walking the boss’ dog and going to the store for the boss’ lunch. Every weekend during the summer, Miller (13) go to the office (14) he didn’t have air-conditioning. "I would hang (15) in the conference room and set up camp and rob the company kitchen," recalled Miller.
(16) , Miller realized he still had questions about his choice. He decided to quit. But the boss said he was making a mistake and offered him a well-paid assistant position. "I eventually (17) that if I did the corporate job, it would be great if I was successful, but I would always wonder about the (18) . If I did the acting and was successful, I would never wonder (19) that job," he explained. He quit and temped (20) many people in the entertainment industry.
Now, he’s a hot star and has people coming up to him at film festivals saying, "Weren’t you the one who (21) to stand by the copy machine "
"That was tough, but I’m glad I have that perspective. Because now I’m at a point (22) big shots laugh at all my jokes and I think, You know, I got coffee for people like you for six years’. So I know what’s (23) , because I’ve seen the other side." But what if, when he was offered the corporate job, there had been more money "It was never about the (24) There’s a kind of excitement that comes along with acting. I can’t find it anywhere else. Even if I had to go back to temping, even if this is not the beginning of an amazing career, I would not (25) making that jum
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题型:实验题

下列不属于学习现象的是______。

A.吃到杨梅就流口水
B.看到杨梅就流口水
C.想到杨梅就流口水
D.听到别人谈论杨梅流口水

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