一湿土样质量100g,含水率16%,若要制备含水率25%的土样,问需加多少水?

题型:问答题

问题:

一湿土样质量100g,含水率16%,若要制备含水率25%的土样,问需加多少水?

考点:注册土木工程师岩土工程专业案例专业案例
题型:问答题

一百多年前,人们就开始了对遗传物质的探索历程。对此有关叙述错误的是[ ]

A.最初认为遗传物质是蛋白质,是推测氨基酸的多种排列顺序可能蕴含遗传信息

B.在艾弗里肺炎双球菌转化实验中,只有加入S型菌的DNA才会发生转化现象

C.噬菌体侵染细菌实验之所以更有说服力,是因为其蛋白质与DNA完全分开

D.噬菌体侵染细菌实验中,在离心后的沉淀物中都能测到放射性同位素35S

题型:问答题

工程车经由一二号线的转场计划由需求部门在()提报计划,由信号楼调度员审批,并于转场当天17.00前提报。

题型:问答题
完形填空(共15题,每题1分,计15分)
Five years ago, when it was time for my cousin to start college, my 75-year-old grandfather, Rex, decided to do the same. He went to    1 , taking classes twice a week until his death last summer.
As a student, my grandfather spent countless hours in his office   2    and completing assignments. Although he was twice as    3     as his professors, he loved going. He said,“You can never  4    too much, no matter how old you are.”He loved everything about school. Learning new things was truly his passion.
My grandfather’s will to learn was a great   5    for me to do my best in school. We were always     6    with each other, trying to bring home the better grade.
When he turned 80 and still had a full head of hair, my grandfather felt like he could take on the       7   . He felt like he could beat the unstoppable no matter what came in his way---whether it was his continuing with cancer     8  a tough professor.
Some people look to Superman or Batman as their   9   , but my grandfather will forever be my hero, the      10   who always came to my rescue. My grandfather was made the hall of fame(名人堂) at his high school as one of the school’s most successful football players. When I did some research I   11 that his nickname was Atlas. In Greek mythology(神话), Atlas held the heavens on his shoulders. For my grandfather’s football team, he was  12 Atlas, holding the team together. He was my Atlas too, as the foundation of our family.
In my times of need he was always there to    13     me and celebrate my accomplishments. I could count on him to help me out and stand by me. The strength he  14    with me will continue to hold me up as I forever keep his memory    15   in my heart and mind.
小题1:
A.collegeB.partyC.hospitalD.cinema
小题2:
A.teachingB.talking C.studyingD.playing
小题3:
A.tallB.newC.thinD.old
小题4:
A.payB.knowC.thinkD.work
小题5:
A.exampleB.exerciseC.methodD.friend
小题6:
A.fightingB.jokingC.competingD.arguing
小题7:
A.worldB.countryC.cityD.class
小题8:
A.andB.orC.soD.but
小题9:
A.heroB.studentC.professorD.grandfather
小题10:
A.otherB.onlyC.one D.same
小题11:
A.realizedB.rememberedC.discoveredD.recognized
小题12:
A.myB.hisC.theirD.our
小题13:
A.surpriseB.supplyC.warmD.support
小题14:
A.enjoyedB.sharedC.affordedD.kept
小题15:
A.aliveB.awakeC.aloneD.asleep
题型:问答题

当提升机连续停运()及以上时,信号工必须按有关规定对所属信号通讯系统进行全面检查试运,确认一切正常方准发送提升信号。

A、8小时

B、6小时

C、16小时

D、10小时

题型:问答题

以下药物配伍属于“相须”的是

A.麻黄与黄芩
B.党参与黄芪
C.生姜与黄芩
D.半夏与生姜
E.人参与莱菔子

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