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【简答题】
完成对话。 A: Hello, Li Lei 1 are you going? B: I'm going to the 2 . We're going to help the farmers there. Would you like to 3 with me? A: Certainly. B: OK. 4 go. A: What are you going to 5 there? B: We're going to 6 apples. A: Good.I'd like to do that. B: Look, the students are 7 there.They're 8 apples. A: Let's help 9 . B: 10 right. 1.________ 2.__________ 3.___________ 4._________ 5.__________ 6.________ 7.__________ 8.___________ 9._________ 10._________
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【简答题】机械零件主要有哪些失效形式?
【简答题】已知单位负反馈系统,开环传递函数为(2s+2)/(s^2+2s+1) (1)利用MATLAB对该闭环系统建立传递函数模型; (2)将第一问中求得的传递函数模型转化为零极点增益模型和状态空间表达式。 要求:上传程序代码及运行结果。
【简答题】How and why Jack came to China______ (be) not known.
【简答题】机械零件主要有哪些失效形式?常用的设计准则主要有哪些?
【单选题】It won’t work:,it’s a bad idea,and secondly it’ll cost too much.
A.
above all
B.
to begin with
C.
first of all
D.
at first
【单选题】Don’t forget: it’ll be the first time ___ in public.
A.
I’ve spoken
B.
Ishall speak
C.
I’ll speak
D.
I speak
【单选题】Don’t forget it’ll be the first time ____ in public
A.
I’ve spoken
B.
I shall speak
C.
I will speak
D.
I speak
【单选题】—It's _____ in the sea, I feel very nervous. —Don't worry, you'll _____ it soon. [ ]
A.
the first time swim, get used to do
B.
my first time swimming, used to
C.
my first time swimming, become used to
【简答题】背景 某厂新建一条生产线，工期要求9月10日投产，因遇到“非典”时期，机械设备于7月28日才陆续到位，晚到45d，而且设备制造质量粗糙，造成施工安装单位一边进行设备安装一边整修不规范设备。 设备在试生产2个月后，密封装置性能较差。检查发现制造的曲轨误差超限，同时导致了施工中出现违反操作规程、强行安装的情况，使曲轨产生变形，最终密封装置出现20ram偏差而形成漏风。为处理事故，停产5d整修，设备制造...
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