已知工程网络计划中,工作M、N、P无紧后工作,则该网络计划的计算工期应等于这三项工作

题型:单项选择题

问题:

已知工程网络计划中,工作M、N、P无紧后工作,则该网络计划的计算工期应等于这三项工作的()。

A.最早完成时间的最大值

B.最迟完成时间的最大值

C.最早完成时间的最小值

D.最迟完成时间的最小值

考点:监理工程师(建设部)建设工程质量、投资、进度控制建设工程质量、投资、进度控制
题型:单项选择题

阅读理解。

    Do you know the story about Tom? It was a true story. Tom was an English boy and he was eight years

  old. Tom didn't like soap or water. Three or four times a day his mother said to him, "Tom, your hands

 are very dirty again. Go and wash them." But Tom never wash them well. He only put his hands in the

 water for a few second and then took them out again.

     Tom's uncle and aunt lived in another city. One day they came to stay with Tom's parents, and they

 brought their small son, Ted, with them. Ted was seven years old and he didn't like soap or water, either.

     The boys sat with their parents for a few minutes and then they went outside. When they were playing,

 Tom looked at Ted's hand and then went back to Ted's parents and said proudly (骄傲地), " Ted's hands

  are dirtier than mine(比我的更脏)."

     "Of course they are." Ted said angrily, "You are one year older than I am."

1. Tom's mother asked him to _____ three or four times a day.

    A. wash his hands

    B. do his homework

    C. clean his bedroom

    D. wash his teeth

2. When Tom saw Ted's hands, he felt____.

    A. sorry

    B. proud

    C. sad

    D. happily

3. Tom's hand is a little _____ than Ted's.

    A. dirtier

    B. cleaner

    C. bigger

    D. smaller

4. From the story we know that _____.

    A. Tom liked soap and water, but Ted didn't

    B. Ted liked soap and water, but Tom didn't

    C. Tom and Ted liked soap and water

    D. Tom and Ted didn't like soap or water

5. How many people are there in the story?

    A. Four.

    B. Five.

   C. Six.

    D. Seven.

题型:单项选择题

已知:25°C时,KSP[Mg(OH)2]=5.61×10-12,KSP[MgF2]=7.42×10-11 。下列说法正确的是[     ]

A.25°C时,饱和Mg(OH)2溶液与饱和MgF2溶液相比,前者的c(Mg2+ )大

B.25°C时,在Mg(OH)2的悬浊液加入少量的NH4Cl固体,c(Mg2+ )增大

C.25°C时,Mg(OH)2固体在20ml0.01mol/L氨水中的KSP比在20mL0.01mol/LNH4Cl溶液中的KSP

D.25°C时,在Mg(OH)2的悬浊液加入NaF溶液后,Mg(OH)2不可能转化成为MgF2

题型:单项选择题

She is planning to hold a party. Let's help her______some good ideas.   [ ]

A. come out          

B. come up  

C. catch up with      

D. come up with

题型:单项选择题

行政处罚的种类不包括()

A.责令停产停业

B.暂扣许可证

C.管制

D.罚款

题型:单项选择题

氢气运行有关规定是什么?

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