设A={1,2,3}，则A上的二元关系有()个。

1.GeoffreyChauceristhefounderoftheEnglish.

3.ParadiseLostisexceptone.Whichone?

4.Inthe19thcenturyEnglishliterature,anewliterarytrend,appeared.Anditflourishedinthefortiesandintheearlyfifties.

5.WhichofthefollowingwritersdoesnotbelongtoEnglishcriticalrealists?

6.“Please,Sir,Iwantsomemore.”Themasterwasafat,healthyman,butheturnedverypale...Thisdescriptionisfrom.

7.BothtwofamousEnglishwriters,WilliamMakepeaceThackerayandJohnBunyan,oncewrote.

8.Thescarletletter“A”onHester’sdressisasymbol,originallyamarkoffirstletterof.

9.TheodoreDreiserbelievedthat.

10.WhichofthefollowingisnottheworkwrittenbyMarkTwain?

20.TheSoundandtheFuryisnotoneofWilliamFaulkner’sworks.

2.下列各项中，被划分为预算会计要素的是（）。

2.钢筋弯曲90°的量度差值是()。

当经营杠杆系数为2，销售量变动率为5%，目标利润率为

2.Android程序打包发布生成的可执行文件的扩展名是（）。