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【判断题】
轴类零件在进行机械加工时,常用中心作为定位基准,所以中心孑L是基本精基准。
A.
正确
B.
错误
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【判断题】消费 者 市场购买者众多,市场集中,成交次数频繁, 单次 交易量 少 。( )
A.
正确
B.
错误
【单选题】听力原文:M: Time to eat! W: Coming. Oh, Im starving. M: Good, good. W: Oh yuck! Whats that? M: Ah, now dont complain! W: But what is it, and where is mum? M: Now, your mum put me in charge of dinner becau...
A.
He tells her honestly what he thinks about it.
B.
He refuses to eat it.
C.
He throws it away after making it.
D.
She can tell by his non-verbal expressions.
【简答题】阅读下面的文字,完成 11~15 题。 读树 李国文那时住东城,去劳动人民文化宫的机会较多,后来,随着北京市的向外拓展,我便搬到城外去了。这样,只有每年的书市,来到太庙,挤到熙熙攘攘的青年读者群中,买一些想买的廉价书。但热销的摊点,往往难以与年轻人比赛力气,半天下来,也着实累,便找个树荫下的长椅歇腿。 过去逛太庙,喜欢读树。树可以读吗?我想这个回答是肯定的,因为一棵树,就是一本书,树和人一样,即使...
【单选题】听力原文:M: Not everyone bas as good a friend as Jim. W: I wish all of your friends were as nice. Q: What do we learn from this conversation? (3)
A.
No one has a friend like Jim.
B.
Everyone is Jim's good friend.
C.
The man feels lucky to have Jim as a friend.
D.
The woman doesn't like any of the man's friends.
【单选题】在多级直接耦合放大器中,零点漂移对放大电路的影响最严重的一级是
A.
输入级
B.
输出级
C.
中间级
D.
增益最高的一级
【单选题】Speaker A: Good afternoon, Im here for my four oclock appointment with Dr. Brown. Speaker B: ______
A.
Nice to see you. I'm Dr. Brown's secretary.
B.
Why don't you have a seat for a moment?
C.
Excuse me, when did you make this appointment with him?
D.
I'm sorry. He will be busy the whole afternoon.
【单选题】Speaker A: Good morning. Im Rose Robins, your flight attendant Welcome aboard Speaker B: ______
A.
Hello, my name is John Smith.
B.
Hello, I'd like to sit beside my friend. Can you arrange that for us?
C.
Good morning. Nice to meet you.
D.
Hi. I'm glad to know you. This is my first flight to Shanghai.
【简答题】据统计,今年国庆 8 天长假期间,全国发生了 6.8 万多起交通事故。与去年同期相比,数量有了大幅下降,但是如此数据仍令人心惊。尽管公安部出台了一系列的规定,对违反交通规则者予以惩罚,但结果并不显著,每年全国仍有许多交通事故。 毋庸讳言,所谓的“中国式过马路”其实已经成为城市交通管理的一种“痼疾”,这一现象折射出的,不仅是管理手段的乏力与无奈,还有国人规则意识的淡薄。有很多人认为造成这些事故的原因...
【多选题】下列说法正确的是( )。
A.
集成模拟电路采用直接耦合方式的原因是集成工艺难于制造大容量的电容
B.
采用直接耦合方式的多级放大电路,中频区各级静态工作点相互独立,互不影响。
C.
采用阻容耦合方式的多级放大电路,中频区各级静态工作点相互独立,互不影响。
D.
采用温度特性较好的高性能器件可以在一定程度上抑制零点漂移
E.
采用差分放大电路,利用特性互补的异型对管,可以使它们的温度漂移互相抵消
【简答题】句型转换。 1. Tom has few good friends. (改为反意疑问句). Tom bas few good friends, _________ _________? 2. Next Sunday , we are going to go hiking. (就划线部分提问) _________ _________ you going to go hiking? 3. Wang D...
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