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听力原文:A: Overseas Call, Operator. B: Yes, Operator, I want to make an overseas call to New York. But I'll check the time difference first. What time is it in New York when it is 10 a. m. in London? A: It's 2 p. m. B: Good. I want to make a collect call right now. A: What is the number, please? B: The number is 932-0856, and the area code is 212. A: What's the name of the party you're calling? B: John Friedrich Herbart. Please make it urgent, as I want to catch him before he leaves the office. A: Yes, Sir. B: Thank you. ?You will hear three telephone conversations. ?Write one or two words or a number in the numbered spaces or forms below. ?After you have listened once, replay each recording. Conversation One ?Look at the note below. ?You will hear a man checking time difference before making an overseas call. Overseas Call Message 1 He'd like to make a call to (1) 2 When it's 10 a.m. , it's (2) in London 3 The number: (3) the area code, (4) The name of the party: John Friedrich Herbart
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【单选题】假定需求函数为Q=10-2P(Q为需求,P为价格),则在P=1处,需求弹性系数是
A.
0.25
B.
0.5
C.
1
D.
1.25
【单选题】当变量c的值不为2. 4. 6时,值也为“真”的表达式是_____。
A.
(c= =2)||(c= =4)||(c= =6)
B.
(c>=2&&c<=6)||(c!=3)||(c!=5)< /div>
C.
(c>=2&&c
D.
(c>=2&&c<=6)&&(c%2!=1)< /div>
【单选题】All______ is a continuous supply of fuel.
A.
what is needed
B.
the thing needed
C.
that is needed
D.
for their needs
【单选题】What is the best title for the passage?
A.
A Moratorium on Bottom Trawling Is Urgently Needed
B.
The Oncoming Exploration to the Deep Sea
C.
The Disaster of Deep Sea Life
D.
Rainbow Warrior Sets out to Save Deep Sea Life
【单选题】精馏塔中由塔顶向下的第 n - 1 、 n 、 n +1 层塔板,其气相组成的关系为
A.
y n +1 > y n > y n - 1
B.
y n +1 = y n = y n - 1
C.
y n +1 < y n < y n - 1
D.
不确定
【判断题】分析夹具底座零件的图纸,可知 零件底座上表面的粗糙度为Ra6.3μm,加工中粗铣也能达到精度要求,但进给速度要取得慢一些。
A.
正确
B.
错误
【单选题】假定需求函数为Q=10-2P(Q为需求,P为价格),则在P=1处,需求价格弹性为( )。
A.
0.25
B.
0.5
C.
1
D.
1.25
【判断题】分析夹具底座零件的图纸,可知 零件底座上有4个φ6mm的装配孔位于底座的四个角,4个孔沿X轴和Y轴方向上位置尺寸都是24mm,加工中可通过先打中心孔再用麻花钻钻孔来予以保证。
A.
正确
B.
错误
【判断题】分析夹具底座零件的图纸,可知 零件底座上4个φ6mm装配孔,孔沿X轴和Y轴方向上位置尺寸的上下偏差要求分别为+0.05mm和-0.05mm,加工中可通过先打中心孔再用麻花钻钻孔来予以保证。
A.
正确
B.
错误
【判断题】分析夹具底座零件的图纸,可知 零件支架厚度尺寸为7mm,尺寸的上下偏差要求分别为+0.05mm和-0.05mm。
A.
正确
B.
错误
相关题目:
【单选题】当变量c的值不为2. 4. 6时,值也为“真”的表达式是_____。
A.
(c= =2)||(c= =4)||(c= =6)
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