混凝剂投配方式为()时,其溶解应按用药量大小、药剂性质,选用水力、机械或压缩空气等搅

题型:单项选择题

问题:

混凝剂投配方式为()时,其溶解应按用药量大小、药剂性质,选用水力、机械或压缩空气等搅拌方式。

A、自动投加

B、人工投加

C、湿投

D、干投

考点:注册设备工程师(给水排水)注册设备工程师(给水排水)题库
题型:单项选择题

“Who has more questions, a teacher or a student?”About this question a great learned man told his students that nobody does but a teacher.

The students got puzzled. With a smile, the teacher drew the circles.“Within the larger one is my knowledge of things and within the smaller one is yours. Out of the circles is still unknown to both of us. Since mine is larger, as you can see, the line that marks out the circle is longer. That makes it clear that who has more chances to face something still unknown.”

小题1:The great learned man believed that          .

A.a teacher has more questions

B.a student has more questions

C.a teacher has no questions

D.a student has no questions小题2:The students thought that            

A.a student has fewer questions than his teacher

B.a teacher has more questions than a student

C.those who have less knowledge have more questions

D.those who have more knowledge have more questions小题3:At the end of the story, the greatest learned man made a conclusion that     .

A.a student should learn more from his teacher

B.a teacher should not have many question

C.a student knows much more than his teacher

D.a teacher has more chances to face unknown knowledge小题4:Which of the following titles is NOT suitable for the story?

A.You will Never Learn English

B.A Teacher and His Student

C.There Is No Limit to Knowledge

D.One Is Never Too Old to Learn小题5:We can often find such an article in        .

A.a guidebook to a museum

B.any kind of books

C.a newspaper or a magazine

D.an encyclopedia(百科全书)

题型:单项选择题

某养鸡场流行一种传染病,鸡的感染率为10%.现对50只鸡进行抽血化验,以期查出所有病鸡.设计了如下方案:按n(1≤n≤50,且n是50的约数)只鸡一组平均分组,并把同组的n只鸡抽到的血混合在一起化验,若发现有问题,即对该组的n只鸡逐只化验.记X为某一组中病鸡的只数.

(1)若n=5,求随机变量X的概率分布和数学期望;

(2)为了减少化验次数的期望值,试确定n的大小.

(参考数据:取0.93=0.73,0.94=0.66,0.95=0.59,0.910=0.35,0.925=0.07.)

题型:单项选择题

在索赔谈判的过程中,保险经纪人应忠实于( )。

A.受益人

B.投保人

C.保险人

D.被保险人

题型:单项选择题

某轮某底舱货舱容积为2710m3,双层底高1.148m,舱高7.132m,计划配装两种货物:下层焦宝石1000m(S.F=0.174m3/t),上层花生果500t(S.F=3.128m3/t),则两种货物的重心高度分别为()m。

A.2.148;4.115

B.2.148;5.170

C.2.100;4.153

D.1.185;4.121

题型:单项选择题

问题控制流程包括:()

A.接受问题报告

B.问题初步诊断

C.是否存在临时措施

D.问题关联和问题事故处理流程

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