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请讲出AD£1，AD£3，AD£5，AD£6，AE£9，AE£13的作用。
请讲出AD£1，AD£3，AD£5，AD£6，AE£9，AE£13的作用。
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更多“ 请讲出AD£1，AD£3，AD£5，AD£6，AE…”相关的问题
如右图所示，梯形ABCD的对角线AC⊥BD，其中AD＝1/2，BC＝3，AC＝14/5，BD＝2．1。问梯形ABCD的高AE的值是（）。
如图，长方形ABCD的面积是1，M是AD的中点，N在AB边上，且AN=BN。那么，阴影部分的面积等于()。
A．1/2
B．1/3
C．5/12
D．7/11
.jpg)
A.4
B.5
C.6
D.7．5
听力原文：Woman: Hello. Fashion Magazine. How can I help you？
Man: Hello. This is Anderson. Can you introduce me the advertising rates of your magazine？
Woman: OK! Our advertising rates are different according to size and period. Our fall and spring editions are more costly than winter and summer editions。When do you want to advertise？
Man: I'd like to advertise in the spring edition, if possible.
Woman: Oh, the time might be a little tight because our press date is March 5th, but it can be done. Do you have a predetermined design？ You can use either your own designers or if it is more convenient for you, we have a team of designers to serve you.
Man: Thank you, but my company has already had the ad designed. How much will it cost for a full page ad in your spring edition？
Woman: It depends on the location. Would you prefer a front or back page ad？ Those are more prime spots. We also offer pages in the middle of the magazine.
Man: I think the back page ad is nice. How much is it？
Woman: ￡1500.
Man: OK. I got it. Thanks.
Woman: My pleasure.
Notes
The edition the man wants to advertise on is: (1)
The press date is (2)
The location of the ad the man likes is (3)
The cost of the ad is: (4)
(1)
A.9/16
B.1/9
C.16/9
D.9
在图(a)所示结构中，AD为刚性杆，杆1、2、3用弹性模量E=200GPa的材料制成，备杆的横截面面积均为A=2000mm2。若杆2的长度制造误差δ=0.4mm。求此结构在强行装配后三杆横截面上的应力。
50kN，试求各链杆所受的力。
有以下程序 main() {chara[5][10]={one，two,three，four,fiye)； inti，j； chart； for(i=0；i＜4；i++) for0=i+1；j＜5；j++) if(a[i][0]＞aD][0]) {t=a[i][0]；a[i][0]=a[j][0]；a[j][0]=t；} puts(a[1])； } 程序运行后的输出结果是
A．fwo
B．owo
C．two
D．fix
