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【单选题】
事故是有意外的能量释放引起的，这种能量释放的发生是由于管理者或操作者没有适应生产过程中物的或人的因素的变化，产生了计划错误或人为失误，从而导致不安全行为或不安全状态，破坏了对能量的（ ），既发生了事故，事故造成生产过程中伤亡或财产损失。
A.
屏蔽
B.
控制
C.
储存
D.
传递
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举一反三
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。
A.
HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【单选题】Which of the following is NOT mentioned when Irene talked about the writing part in the project?
A.
They had some historians come and talk to English students about local history.
B.
Students could choose to write in pairs.
C.
They had a third-grade teacher to add notes to tough terminology.
D.
Stories were sent to a historian to make sure that everything was historically accurate.
查看完整题目与答案
【简答题】论说文 根据下面的材料写一篇论说文，题目自拟，要求700字左右。 毛遂于平原君前自荐而成功，《三国演义》中的蒋干自告奋勇去劝降周瑜，结果是“偷鸡不着蚀把米”，中了周瑜的“离间计”。 请以此为话题，谈谈你的理解，不超过700字。
查看完整题目与答案
【简答题】假如你叫Emma，想应聘2010年上海世博会志愿者，请根据下面提供的信息，用英文给组委会写一篇简短的自荐信(应聘的理由至少4条)。 要求：1.词数80左右，开头和结尾已给出，不计入总词数。 2.适当发挥想象，使短文完整、流畅。 Dear Madam/Sir, I am writing to recommend myself as a volunteer for 2010 World Expo. ▲...
查看完整题目与答案
【简答题】阅读理解 A year after graduation,I was offered a position teaching a writing class.Teaching was a profession I had never seriously considered,though several of my stories had been published.I accepted the...
查看完整题目与答案
【单选题】pH=9 的 NH3-NH4Cl 缓冲溶液配制正确的是( )(已知 NH4 的 Ka=1×10 )。
A.
将 35gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O24mL 用水稀释至 500mL
B.
将 3gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 207mL 用水稀释至 500mL
C.
将 60gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 1.4mL 用水稀释至 500mL
D.
将 27gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 197mL 用水稀释至 500mL
查看完整题目与答案
【单选题】项目进度网络图属于哪个过程的产出?
A.
活动定义
B.
活动排序
C.
活动所需时间估算
D.
进度制定
查看完整题目与答案
【简答题】The writing of the play is (actual) __________ finished, I had only a few changes to make.
查看完整题目与答案
【单选题】According to passage, it is telephone that ______.
A.
has made letter writing an art
B.
has prevented wars by avoiding written communication
C.
has made world different from what it was
D.
has caused wars by magnifying and extending human conflicts
查看完整题目与答案
【单选题】What will the counselors at the office do?
A.
Give students hints about writing resumes.
B.
Provide students with jobs that interest them.
C.
Put students in touch with people offering the positions.
D.
Help students pass interviews.
查看完整题目与答案
相关题目：
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。
A.
HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【单选题】Which of the following is NOT mentioned when Irene talked about the writing part in the project?
A.
They had some historians come and talk to English students about local history.
B.
Students could choose to write in pairs.
C.
They had a third-grade teacher to add notes to tough terminology.
D.
Stories were sent to a historian to make sure that everything was historically accurate.
查看完整题目与答案
【简答题】论说文 根据下面的材料写一篇论说文，题目自拟，要求700字左右。 毛遂于平原君前自荐而成功，《三国演义》中的蒋干自告奋勇去劝降周瑜，结果是“偷鸡不着蚀把米”，中了周瑜的“离间计”。 请以此为话题，谈谈你的理解，不超过700字。
查看完整题目与答案
【简答题】假如你叫Emma，想应聘2010年上海世博会志愿者，请根据下面提供的信息，用英文给组委会写一篇简短的自荐信(应聘的理由至少4条)。 要求：1.词数80左右，开头和结尾已给出，不计入总词数。 2.适当发挥想象，使短文完整、流畅。 Dear Madam/Sir, I am writing to recommend myself as a volunteer for 2010 World Expo. ▲...
查看完整题目与答案
【简答题】阅读理解 A year after graduation,I was offered a position teaching a writing class.Teaching was a profession I had never seriously considered,though several of my stories had been published.I accepted the...
查看完整题目与答案
【单选题】pH=9 的 NH3-NH4Cl 缓冲溶液配制正确的是( )(已知 NH4 的 Ka=1×10 )。
A.
将 35gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O24mL 用水稀释至 500mL
B.
将 3gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 207mL 用水稀释至 500mL
C.
将 60gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 1.4mL 用水稀释至 500mL
D.
将 27gNH4Cl 溶于适量水中,加 15mol/L 的 NH3•H2O 197mL 用水稀释至 500mL
查看完整题目与答案
【单选题】项目进度网络图属于哪个过程的产出?
A.
活动定义
B.
活动排序
C.
活动所需时间估算
D.
进度制定
查看完整题目与答案
【简答题】The writing of the play is (actual) __________ finished, I had only a few changes to make.
查看完整题目与答案
【单选题】According to passage, it is telephone that ______.
A.
has made letter writing an art
B.
has prevented wars by avoiding written communication
C.
has made world different from what it was
D.
has caused wars by magnifying and extending human conflicts
查看完整题目与答案
【单选题】What will the counselors at the office do?
A.
Give students hints about writing resumes.
B.
Provide students with jobs that interest them.
C.
Put students in touch with people offering the positions.
D.
Help students pass interviews.
查看完整题目与答案