问题 单项选择题

某规格型号相同的四台设备的安装工作,每台设备的安装可分为4个施工过程,其流水节拍分别为4 d、8 d、8 d、4 d,若组织成异节奏流水施工,其计算工期应为( )。

A.32 d

B.34 d

C.36 d

D.38 d

答案

参考答案:C

解析:
[考点] 第三章安装工程施工组织第三节施工进度计划:流水作业原理。
[思路] 异节奏流水施工计算总工期公式为
T=(m+n1-1)·K+∑zi·i+j+∑Gj·j+1-∑Cj·j+1
式中 T——流水施工总工期;
m一——施工段数;
n1——专业工作队数目;
K——最大公约数{t1,t2,…tn};
j——施工过程编号,1≤j≤n
Zj·j+1——j与j+1两个施工过程间的技术间歇时间;
Gj·j+1——j与j+1两个施工过程间的组织间歇时间;
Cj·j+1——j与j+1两个施工过程间的平行搭接时间。
由提干已知条件可知:K=4,
n1=b1+b2+b3+b4
b1=t1/Kb=4/4队=1队;
b2=t2/Kb=8/4队=2队;
b3=t3/Kb=8/4队=2队;
b4=t4/Kb=4/4队=1队;
n1=b1+b2+b3+b4=6队
m=4
所以T=(m+n1-1)·K+∑Zj·j+1+∑Gj·j+1-∑Cj·j+1=(4+6-1)×4d=36d
[易错] 注意识别公式中各字母的含义。
[拓展] 根据各施工过程之间流水节拍的特征不同,流水施工可以分为等节奏流水施工、异节奏流水施工和无节奏流水施工三种组织方式。这三种方式各自的特征(每个五条),是要求考生掌握的重点内容。

单项选择题

Honesty comes in many forms. First there’s self honesty. Is what people see the real article or do you appear through smoke and mirrors I find that if I try to be something I’m not, I feel unsure of myself and take out a part from my PBA (personal bank account). I love how singer Judy Garland put it, "Always be a first class version of yourself, instead of a second class version of somebody else. "
Then there’s honesty in our actions. Are you honest at school, with your parents, and with your boss If you’ve ever been dishonest, I think we all have, try being honest, and notice how whole it makes you feel. Remember, you can’t do wrong and feel right. This story by Jeff is agood example of that:
In my second year of study, there were three kids in my math class who didn’t do well. I was really good at it. I would charge them three dollars for each test that I helped them pass. I’d write on a little piece of paper all the right answers, and hand them off.
At first I felt like I was making money, kind of a nice job. I wasn’t thinking about how it could hurt all of us. After a while I realized I shouldn’t do that any more, because I wasn’t really helping them! They weren’t learning anything, and it would only get harder down the road. Cheating certainly wasn’t helping me.
It takes courage to be honest when people all around you who are getting away with cheating on tests, lying to their parents, and stealing at work. But, remember, every act of honesty is a deposit into your PBA and will build strength.

What does the author expect to show by Jeff’s story

A.Honesty can be of great help.
B.A bad thing can be turned into a good one.
C.Helping others cheat can do good to nobody.
D.One should realize the wrong in his bad deeds.

判断题