手工电弧焊的引弧方法有()和()两种。

题型:填空题

问题:

手工电弧焊的引弧方法有()和()两种。

考点:机械制造行业技能考试金属焊接与切割(综合练习)金属焊接与切割(综合练习)题库
题型:填空题

支配骨骼肌的躯体运动神经纤维释放的递质是

A.肾上腺素
B.去甲肾上腺素
C.乙酰胆碱
D.γ-氨基丁酸

题型:填空题
I like playing _______ ping-pong.

A. /
B. the
C. a
D. an
题型:填空题

阅读理解

     In spite of the uncertainty of the economy, the movie industry has been stricken by a box-office

outburst. Suddenly it seems as if everyone is going to the movies, with ticket sales this year up 17.5

percent, to $1.7 billion.

     And it is not just because ticket prices are higher. Attendance has also jumped, by nearly 16 percent. If

that pace continues through the year, it would amount to the biggest box-office increase in at least two

decades.

     Americans, for the moment, just want to hide in a very dark place. People want to forget their troubles,

and they want to be with other people. Helping feed the outburst is the mix of movies, which have been

more audience-friendly in recent months as the studios have tried to adjust after the discouraging sales of

more serious films.

     As she stood in line at the 18-screen Bridge theater complex here on Thursday to buy weekend tickets

for "Jonas Brothers: The 3D Concert Experience," Angel Hernandez was not thinking much about escaping

reality. Instead, Ms. Hernandez, a Los Angeles parking lot attendant and mother of four young girls, was

focused on one very specific reality: her wallet.

     "Spending hundreds of dollars to take them to Disneyland is ridiculous right now," she said. "For $60

and some candy money I can still be a good mom and give them a little fun."

     A lot of parents may have been thinking the same thing Friday, as "Jonas Brothers" sold out more than

800 theaters, and was expected to sell a powerful $25 million or more in tickets.

     The film industry appears to have had a hand in its recent good luck. Over the last year or two, studios

have released movies that are happier, scarier or just less depressing than what came before. After poor

results for a rush of serious dramas built around the Middle East, Hollywood got back to comedies.

1.Which of the following is not a reason for the improvement of the movie industry?

A. A growing number of people are going to the cinema.

B. People are richer with the development of economy.

C. More comedies are made than serious films.

D. People have to pay more to watch a movie.

2.Ms. Hernandez purchased the movie tickets because _____.

A. she tried to escape reality                          

B. she was a crazy movie fan

C. she was fond of Disneyland                        

D. she wanted to please her kids

3.According to the text, which of the following number is not used to describe the shooting up of the 

movie industry?

A.17.5%              

B. $1.7 billion                

C. $60                

D. $25 million

4.The passage is developed mainly by _____.

A. presenting the effect and analyzing the causes        

B. following the order of time

C. describing problems and drawing a conclusion              

D. making comparison of ideas

题型:填空题

婴儿颅内压增高体征主要是

A.烦躁或嗜睡
B.喷射性呕吐
C.前囟饱满
D.肌张力高
E.惊厥

题型:填空题

脚气病是因为缺乏()。

A.硫胺素

B.核黄素

C.生育酚

D.抗坏血酸

E.钴胺素

更多题库