如图一圆形截面,O点为它的形心.m-n线平行于z轴且将截面分成上下量个部分,两个部分

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问题:

如图一圆形截面,O点为它的形心.m-n线平行于z轴且将截面分成上下量个部分,两个部分的面积分别为A1、A2,对z轴的静矩分别为Sz1、Sz2则()。

 

A.Sz1+Sz2=0

B.Sz1+Sz2<0

C.Sz1+Sz2>0

D.不能确定

考点:一级注册结构工程师一级结构师基础知识一级注册结构工程师基础部分上午试卷
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《庄子·让王》:“日出而作,日入而息,逍遥于天地之间而心意自得。”对此话理解合适的有

①反映了小农经济下人们的生活状况②展现了自给自足、生活富裕的心态

③体现了人与自然的和谐相处④强调了人定胜天的思想[ ]

A.①②③④

B.①②③

C.①③

D.②④

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I didn’t have a job at the time and I was getting help from the government. One day, I was walking to a 36 to get some food when I noticed a little man    37  on a bench beside the store. I walked past him but could not 38     thinking about him.  So I 39 around and went up to him and asked him if he was 40 . He said no. He said he hadn’t 41 for two days. I told him, “Don’t    42 . I’ll be right back.” Before leaving, I 43  him what he would like to eat. He said it didn’t 44 . Then I asked him to tell me what he hadn’t had for a long    45 . He said “a Pepsi”. I went into the store and got him some bread, lunch meat, chips, cookies — 46 food for a few days. The store didn’t have Pepsi, 47     I had to go to another one. I used the 48  of what I had to get him a Pepsi from a store far 49 .
After a long time, when I brought him the 50 and the Pepsi, he cried. With    51  in his eyes, he said, “You are my angel.” When he 52 to hug me, I had a strange 53 — he was my angel, too. I couldn’t even 54  the feeling clearly. Maybe because he gave me a / an 55  to help him, which helped me to understand that I also had abilities to help others.
小题1:
A.storeB.company C.restaurantD.hotel
小题2:
A.workingB.sittingC.standingD.drinking
小题3:
A.waitB.beginC.forgetD.stop
小题4:
A.lookedB.facedC.turnedD.played
小题5:
A.lonelyB.hungryC.tiredD.okay
小题6:
A.eatenB.restedC.sleptD.walked
小题7:
A.moveB.worryC.refuseD.lie
小题8:
A.toldB.wonderedC.askedD.advised
小题9:
A.careB.knowC.concernD.matter
小题10:
A.wayB.pathC.timeD.season
小题11:
A.enoughB.manyC.few D.little
小题12:
A.forB.butC.asD.so
小题13:
A.nextB.lastC.first D.large
小题14:
A.overB.awayC.offD.near
小题15:
A.lunchB.dishC.foodD.supper
小题16:
A.angerB.excitementC.smilesD.tears
小题17:
A.sat downB.passed onC.stood upD.picked up
小题18:
A.wayB.opinionC.attitudeD.feeling
小题19:
A.explainB.introduceC.repeatD.remember
小题20:
A.incidentB.opportunityC.choiceD.method
题型:单项选择题

乙型肝炎与丙型肝炎病毒重叠感染,可能为现症感染,也可能为病毒携带者( )

A.乙肝五项中HBsAg、HBeAg、anti-HBc阳性
B.anti-HBs、anti-HBe、anti-HBc阳性,HBV-DNA阴性
C.anti-HBs阳性
D.anti-HAVIgM阴性,anti-HAVIgG阳性
E.HBsAg、anti-HBc阳性,anti-HCV阳性

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在打印Excel工作簿时,如果将工作表页面的打印方向指定为“横向”,应选择()菜单下的“页面设置”命令。

A.文件

B.工具

C.编辑

D.视图

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急性脑血管病临床的主要特征是:()、()和()高,出现()的表现。

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