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【单选题】
以下哪个电路能在选择控制信号的作用下,从几个数据中选择一 个并将其送到一个公共的输出端,请选择A.
译码器
B.
编码器
C.
数据分配器
D.
数据选择器
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反馈参考答案：
举一反三
【单选题】单轴关节叙述错误的是
A.
只能绕一个运动轴作一组运动
B.
绕冠状轴作屈伸运动
C.
屈戌关节又名滑车关节
D.
桡腕关节属于单轴关节
E.
环枢正中关节和桡尺近侧关节属于单轴关节
【单选题】. --- What a beautiful hat ! How much did it _______ you ? --- It’s _______. I’m very lucky to be the 1000 th customer of the shopping center.
A.
charge; free of charge
B.
charge; free of the charge
C.
cost; free of charge
D.
cost; free of the charge
【单选题】I’ve brought two babies with me. It’s really inconvenient for me to drive to the underground parking lot.
A.
Don’t worry. I’ll take care of your babies while you’re driving to the underground parking lot.
B.
Don’t worry. Someone will drive to the underground parking lot for you with little charge
C.
I’m sorry. There is no vacancy right now
D.
Don’t bother about it. We provide free valet service
【单选题】When you are in emergeney and need to call the police, you should do that( ). It’s( )to dial 110, 119 and 120.
A.
after a while: free
B.
immediately;free of charge
C.
at once ;cheap
D.
later;not allowed
【简答题】Part 2 G: Oh! That sound nice. But how much more is that going to cost? R: That would of course be at no extra charge to you. G: Thank you. R: My pleasure. G: What about the ( 1 )? R: Oh...
【单选题】单轴关节叙述错误的是
A.
只能绕一种运动轴作一组运动
B.
只能绕冠状轴运动的关节
C.
屈戌关节或滑车关节属于单轴关节
D.
桡腕关节属于单轴关节
E.
环枢正中关节和桡尺近侧关节属于单轴关节
【简答题】一级不可逆液相反应A→2R,C A0 =2.30kmol/m 3 ,出口转化率x A =0.7,每批操作时间t+t 0 =2.06h,装置的生产能力为50000k物R/天,M R =60,则反应器的反应体积Vr为____m 3 。
【单选题】船舶建造工作开始后,监造组驻场顺序一般为:
A.
船体监造师-电气监造师-轮机监造师
B.
轮机监造师-船体监造师-电气监造师
C.
轮机监造师-电气监造师-船体监造师
D.
船体监造师-轮机监造师-电气监造师
【单选题】一级不可逆液相反应 A →2R , C A0 = 2.30 kmol/m 3 ,出口转化率 X A =0.7 ,每批操作时间 t+t 0 = 2.06 h ,装置的生产能力为 50000 kg 产物 R / 天, M R =60 ,则反应器的体积为 _______ 。
A.
19.6 m 3
B.
20.2 m 3
C.
22.2 m 3
D.
23.4 m 3
【单选题】What does Geneva mean by saying “No free lunches”?
A.
She means that stocks are free of charge(免费).
B.
She means that she can pay for lunch.
C.
She means that you have to pay.
D.
She means it’s hard to guess the price.
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