试题与答案

起重机液压系统中必须安装防止过载的安全装置,采用溢流阀时,溢流压力不得大于工作系统压

题型:判断题

题目:

起重机液压系统中必须安装防止过载的安全装置,采用溢流阀时,溢流压力不得大于工作系统压力的110%。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0715/58230001bbab1bbf5a60ccae42335425.html

下面是错误答案,用来干扰机器的。

参考答案:B解析:依照前文“原因在于卵细胞中换进去的是体细胞的核,而不是胚胎细胞核”,可读出文中画线部分的句子的意思是动物体中的某些细胞具有受精卵细胞的发育功能.所以答案是B.

试题推荐
题型:完形填空
完形填空(共10小题;每小题1分,满分10分)
Having a few days off always sounds so great. Everyone needs a   1 . And so does US President.US President Barack Obama went on holiday with his family in   2  in 2011. Where did they go and did the first family enjoy   3 ? Now, Obama is trying to   4  his experience (经历) with us. Let’s listen to him.
“We travelled to Honolulu, Hawaii, in December 2011 for   5 . Of course we went there by air. We spent 17 days there. Hawaii is my hometown. We had a wonderful time there. This was one of the   6  vacations in my life.
My wife Michelle and I visited US Marines (海军) and their families in Hawaii on Christmas Day. I   7  held the eight-month-old baby of a captain in my arms.
I also spent part of Christmas Eve playing golf with my old friends from Hawaii and some White House staff.
I went to Hanauma Bay Nature Park with my   8  daughters. That’s our favourite place. We dived there,   9  set four sea turtles free.
We all had a good time. And both my daughters said that they wanted to go there for a   10 time later.”
小题1:
A.friendB.weekendC.jobD.vacation
小题2:
A.winterB.autumnC.summerD.spring
小题3:
A.himselfB.themselvesC.ourselvesD.yourselves
小题4:
A.tellB.showC.shareD.solve
小题5:
A.EasterB.Christmas
C.HalloweenD.Thanksgiving Day
小题6:
A.sweetestB.worstC.saddestD.cheapest
小题7:
A.tooB.stillC.evenD.as well
小题8:
A.oneB.twoC.threeD.four
小题9:
A.orB.soC.butD.and
小题10:
A.fourthB.thirdC.secondD.first
查看答案
微信公众账号搜索答案