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【简答题】
A Thirty years ago I worked in a company.My j ob was t o sell the cars.I was young and strong and I had been to most parts of the world and I spent one fifth of my time in the trains or planes.I liked such a life and sometimes I called myself“traveler”. But one day I got into trouble.It was a cold morning.It blew heavily and the ground was covered with thick snow outside.I was still in bed though it was nine.I finished a long j ourney the day before and decided to have a good rest。Suddenly the telephone rang and my manager told me to fly to New York to take part in an important meeting.I had to get up and after a quick breakfast I hurried to the airport.The taxi went slowly and I missed the first flight.I had to take the next one.It meant I would wait for nearly five hours in the waiting-room.But five hours later a passenger said the information showed there was a bomb in our plane and the policemen were looking for it.And another five hours passed and most passengers lost their patience before we were allowed to get on the plane.At the entrance each passenger and their baggage had to be examined.A young man who seemed a soldier shouted at the policemen at the entrance,“If I had a gun in my baggage,I would shoot you two hours ago!”
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参考答案:
举一反三
【简答题】写出下列各对称矩阵所对应的二次型:
【简答题】贷款诈骗的客观行为?
【单选题】以下哪项工作不属于项目经理职责范围?( )
A.
项目过程的监理
B.
项目质量监控
C.
项目成员能力提升
D.
项目结算资料收集
【单选题】以下关于HTML代码说法正确的是( )。(选择一项)
A.
g{ clear:both;}
B.
将 标签左侧的浮动元素清除
C.
将 标签右侧的浮动元素清除
D.
将 标签两侧的浮动元素清除
E.
设置 标签两侧允许浮动
【判断题】pH 小于7的溶液为酸性溶液
A.
正确
B.
错误
【判断题】pH值小于7的水溶液显酸性,所以溶液中没有OH-存在。
A.
正确
B.
错误
【单选题】下列说法正确的是(  )
A.
PH小于7时一定为酸性
B.
水离子积K w 与 温度、酸碱性有关
C.
c(H + )=c(OH - )的溶液一定为中性溶液
D.
加入酸或碱促进水电离
【单选题】以下哪项工作不属于项目经理职责范围?( )
A.
项目质量管监控
B.
项目过程的监理
C.
项目成员能力提升
D.
项目结算资料收集
【单选题】溶液的酸碱性及其强弱常用pH值来表示.常温下,pH等于7的溶液为中性,pH大于7的溶液为碱性(数值越大碱性越强),pH小于7的溶液为酸性(数值越小酸性越强).学校科学兴趣小组的同学在一次活动中测得某下雨天雨水的pH为5.6,这表示那天的雨水属于(  )
A.
弱酸雨
B.
酸雨
C.
强酸雨
D.
非酸雨
【简答题】写出矩阵 所对应的二次型 .
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