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提问人:网友l******8 发布时间:2023年1月1日 21:55
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《煤矿矿井机电设备完好标准》中规定,螺母拧紧后,螺栓螺纹应露出螺母()螺距。不得在螺母下面加多余的垫圈来减少螺栓的伸出长度。

A . 1~2

B . 1~3

C . 1~4

D . 1~5

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Section A


Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.

We all know there exists great void (空白) in the public educational system when it comes to   26   to STEM(Science, Technology, Engineering Mathematics) courses. One educator named Dori Roberts decided to do something to change this system. Dori taught high school engineering for 11 years. She noticed there was a real void in quality STEM education at all   27   of the public educational system. She said, "I started Engineering For Kids (EFK) after noticing a real lack of math, science and engineering programs to   28   my own kids in."

She decided to start an afterschool program where children    29    in STEM-based competitions. The club grew quickly and when it reached 180 members and the kids in the program won several state   30   , she decided to devote all her time to cultivating and   31   it. The global business EFK was born.

Dori began operating EFK out of her Virginia home, which she then expanded to   32   recreation centers. Today, the EFK program   33   over 144 branches in  32 states within the United States and in 21 countries. Sales have doubled from $5 million in 2014 to $10 million in 2015, with 25 new branches planned for 2016. The EFK website states, "Our nation is not    34    enough engineers. Our philosophy is to inspire kids at a young age to understand that engineering is a great    35    ."

A) attracted 

B) career 

C) championships 

D) degrees 

E) developing 

F) enroll 

G) exposure 

H) feasible 

I) feeding 

J) graduating 

K) interest 

L) levels 

M) local 

N) operates 

O) participated


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