出自:国家开放大学英语机考

-Would you like to come with me? -_____________________

A、No,I have no ideas.
B、No, I don’t like being with you.
C、Yes, that’s very kind of you. Thanks.
-What shall we do tonight? -_________

A、No problem.
B、It’s up to you.
C、Help yourself.
There are more and more crimes because of a lack of rules and regulations.

A、不断增加的犯罪导致缺乏监管。
B、由于缺乏法律法规,出现了越来越多的犯罪行为。
C、有越来越多的犯罪行为,造成制度缺失。
It.s busy during summer, so buying or reserving tickets in advance is recommended.

A、这里夏天很忙碌,所以建议提前买好或预订好票。
B、这里夏天很忙碌,所以购买或提前预订票被建议。
C、这里夏天很忙碌,所以建议买优先票。
Some children want to test their parents’ or society.s limits.

A、有些儿童想要测试他们的父母或社会的限制。
B、有些儿童想要测试他们的父母或社会的极限。
C、有些儿童想要限制他们的父母或社会。
But I have no idea what they would like to put up on their walls.

A、但是我不能帮他们出主意在墙上挂东西。
B、但是我不知道他们愿不愿意在墙上挂东西。
C、但是我不知道他们想在墙上挂点什么。
My lovely hometown is located on the south shore of an island. It.s a small town with only about 9,000 people and an area of about 3.8 square miles. First, I want to talk about the people in the neighborhood. Generally speaking, people are very nice here, especially in the summer. I feel that in the summer everyone is in a great mood, and very generous. For example, one summer afternoon, I was at the gas station filling up my car and was short of money. Generously an old gentleman gave me the money to pay the gas attendant. That.s the type of people you can expect from my hometown. The greatest part about the town, in my opinion, is the location. The Great Bay is five minutes away from my house and it.s fantastic. Another great thing is how close everybody lives to each other. With it being such a small town, all my friends live five minutes away, which is a great advantage to me and everyone else. Lastly, the nightlife is great. On any Saturday night every bar is packed with people, so there.s always something going on. So far I.ve explained the good side of my hometown, but there are also some boring things about it. It is great in the summer, but it is a different story in the winter. When winter comes around, the town turns into a “ghost town”. This is because there is nowhere to go. The only thing we have is a shopping center. It would be nice if we had a few more options to choose from.

1-1、My lovely hometown is located on the north shore of an island.
A、T
B、F
Cyber security has always been a serious issue as the internet industry is ever growing. Nowadays, people can easily connect to the Internet with a simple click of a mouse. But the global network can be easily destroyed by a single leak. The world is facing a difficult situation in keeping web security. Currently, there are no unified international rules for maintaining internet security. China has called for unified international rules against internet crime. Last year China (and some other countries) handed in a draft Code of Conduct on Information Security to the UN. World leaders and experts discussed the possible internet threats facing the world. They agreed that the only way to deal with internet security threats was to trust each other and strengthen cooperation. The threats cannot be solved by any one country alone. And for these reasons, countries would have a greater chance of trusting each other in dealing with such threats. Though great efforts were made to issue common regulations for the internet, few results have been achieved yet. There.s still a long way to go for unified global internet security rules and regulations.

1-1、Maintaining web security is _______ for China.
A、easy
B、a piece of cake
C、difficult
What do you think ______solve the problem ?

A、you can do
B、can you do
C、you can do to
Never give up _________ your better life.

A、to strive for
B、strived for
C、having strived for
When we heard of it, we were deeply _________.

A、move
B、moved
C、moving
There are __ months a year.

A、eleven
B、twelve
C、ten
He looked _______ after knowing the news.

A、worried
B、worrying
C、worry
_____ is the weekend.

A、Wednesday
B、Saturday
C、Tuesday
You make the reservation, and I.ll _______it in writing.

A、affirm
B、confirm
C、convince
He speaks German, but his native _________ is French.

A、tongue
B、voice
C、accent
These MOOCs make it possible for people to_______ their learning any place around the world.

A、figure out
B、carry out
C、work out
The doctor heard a recorded message and then went to the ________ room.

A、emergence
B、urgency
C、emergency
Knowing about oneself is the first step to _____ success.

A、achieve
B、attend
C、afford
以下哪项不是油箱在液压系统中的功用?()

A、储存液压系统所需的足够油液。
B、散发油液中的热量。
C、沉淀油液的杂质和促进油液中的气体分离消除泡沫。
D、吸收压力冲击和压力脉动。
有两个调整压力分别为5MPa和10MPa的溢流阀串联在液压泵的出口,泵的出口压力为()。

A、5MP
B、10MPa
C、15MPa
D、20MPa
液压传动系统中,压力的大小取决于液压泵的实际工作压力的大小。()

A、√
B、×
气动系统使用()是为了使各种气动元件得到润滑,其安装位置应尽可能靠近使用端。

A、后冷却器
B、油水分离器
C、干燥器
D、油雾器
液压机床中往往采用快速回路,它的主要目的是(),提高系统的工作效率。

A、加快工作机构工进时的速度
B、加快工作机构空载时的速度
C、加快工作机构加工时的速度
D、提高系统油压力
与节流阀相比较,调速阀的显著特点是()。

A、调节范围大
B、结构简单,成本低
C、流量稳定性好
D、最小压差的限制较小
三位四通换向阀的阀芯处于中间位置时,能使双作用单活塞杆液压缸实现差动连接的中位机能是()。

A、H型
B、Y型
C、P型
D、M型
相同结构尺寸、流量和压力下,双叶片摆动缸的输出转矩是单叶片摆动缸的()。

A、1/4
B、1/2
C、2倍
D、4倍
高压系统宜采用()。

A、齿轮泵
B、叶片泵
C、柱塞泵
D、高压叶片泵
解决齿轮泵困油现象的最常用方法是()。

A、降低转速
B、开卸荷槽
C、加大吸油口
D、降低油液温度
下列选项中,对液压油正确的要求是()。

A、粘度大
B、腐蚀性高
C、杂质少
D、闪点和燃点低
液压系统的执行元件是()。

A、电动机
B、液压泵
C、液压缸或液压马达
D、液压阀
气动回路必须设排气管道。()

A、√
B、×
油水分离器安装在后冷却器之前,用来分离压缩空气中的水滴、油滴和杂质等。()

A、√
B、×
不允许直接在流量计测量管的前、后端安装阀门、弯头等极大改变流体流态的部件。()

A、√
B、×
不工作时,减压阀的阀口是常闭的,进、出油口不相通。()

A、√
B、×
换向阀借助于阀芯和阀体之间的相对移动来控制油路的通断,或改变油液的方向,从而控制执行元件的运动方向。()

A、√
B、×
当液压缸的活塞运动到终端时,会与端盖发生机械碰撞,产生很大的冲击和噪声,故一般应在液压缸内设置缓冲装置,或在液压系统中设置缓冲回路。()

A、√
B、×
液压马达与液压泵从能量转换观点上看是互逆的,因此所有的液压泵均可以用来做马达使用。()

A、√
B、×
液体的表压力是以绝对真空为基准来测量的液体压力。()

A、√
B、×
液压传动系统中,压力的大小取决于液压泵的额定压力的大小。()

A、√
B、×
当a、b两个孔同时有气信号时,S口才有信号输出的逻辑元件是()。

A、与门
B、禁门
C、或门
D、非门
气囊式蓄能器中采用的气体是()。

A、空气
B、氧气
C、氢气
D、氮气
用()进行调速时,会使执行元件的运动速度随着负载的变化而波动。

A、溢流阀
B、节流阀
C、减压阀
D、顺序阀
液压缸是将液压能转变为()的转换装置。

A、机械能
B、动能
C、势能
D、电能
()结构简单、价格便宜,常用于高转速、低转矩和平稳性要求不高的工作场合。

A、叶片马达
B、齿轮马达
C、轴向柱塞马达
D、径向柱塞马达
通过改变斜盘式轴向柱塞泵的(),便可改变排量。

A、斜盘倾角
B、斜盘半径
C、球铰倾角
D、球铰半径
伯努利方程是能量守恒定律在流体力学中的一种表示形式,理想液体的伯努利方程中没有()。

A、动能
B、势能
C、热能
D、压力能
空气压缩机属于()。

A、动力部分
B、执行部分
C、控制部分
D、辅助部分
一般在换向阀的排气口应安装消声器。()

A、√
B、×
由空气压缩机产生的压缩空气,一般不能直接用于气压系统。()

A、√
B、×