供电主滑线位于司机室()的桥式起重机,在靠近滑线一端应设置检修()。

题型:填空题

问题:

供电主滑线位于司机室()的桥式起重机,在靠近滑线一端应设置检修()。

考点:铁路车站值班员考试车站行车工作细则车站行车工作细则题库
题型:填空题

阅读理解。

     When you cough or sneeze, please turn your head away from others and cover your mouth with the full

part of your hand. Afterwards, you should say, "Excuse me." This is a rule I set for my students.

     It is so simple, but many kinds have never been told to do this. In fact, I notice adults cough and sneeze

in public without putting a hand over the mouth. I hate traveling by subway (地铁) in New York during cold

and flu season, because it is certain that someone is going to stand right behind me and cough or sneeze on

my neck.

     One important thing I point out to the kids is that after they sneeze or cough on their hand, they should

wash their hands as soon as possible. Otherwise, they will be passing those germs (病菌) along to everything

and everyone they touch.

     In order to help the kids remember this rule, I tell them about an old story. It says that when you sneeze,

evil spirits jump into your body. If you don't cover your mouth, the spirits will enter, but if you cover your

mouth, you will keep them out, We say "God bless you" when someone sneezes, and in Germany you should

say "Gesundheit". That means "Good health to you." Both expressions are said just in case you didn't cover

your mouth in time and the spirits were able to enter your body. The kids love finding out the origins (起源)

of these expressions and it encourage them to put the advice to use more often.

1. The writer of this article must be ______.

A. a reporter

B. a teacher

C. a doctor

D. an officer 

2. What does the underline word "this" mean?

A. Don't cough or sneeze in front of people.

B. Don't stand beside someone who coughs or sneezes.

C. Many people cough or sneeze on the underground train.

D. Cover your mouth when coughing or sneezing and say sorry.

3. After coughing or sneezing on their hand, students are advised to ______.

A. say "God bless you"

B. wash their hands as soon as possible

C. go to see a doctor as soon as possible

D. go home and have a good rest

4. According to the article, the writer would like the kids ______.

A. to be polite to adults

B. to be in better health

C. to have good manners

D. to do well in exams

题型:填空题

某化学课外小组为测定空气中CO2的含量,进行了如下实验:

①配制0.1000 mol/L 和0.01000 mol/L的标准盐酸.

②用0.1000 mol/L的标准盐酸滴定未知浓度的Ba(OH)2溶液10.00 mL,结果用去盐酸19.60 mL.

③用测定的Ba(OH)2溶液吸收定量空气中的CO2,取Ba(OH)2溶液10.00 mL,放入100 mL容量瓶里加水至刻度线,取出稀释后的溶液放入密闭容器内,并通入10 L标准状况下的空气,振荡,这时生成沉淀.

④过滤上述所得浊液.

⑤取滤液20.00 mL,用0.01000 mol/L的盐酸滴定,用去盐酸34.80 mL.

请回答下列问题:

(1)配制标准盐酸时,需用下列哪些仪器?________;

A.托盘天平   B.容量瓶 C.酸式滴定管   D.量筒 E.烧杯   F.胶头滴管 G.玻璃棒

(2)滴定操作中,左手________,右手________,眼睛________;

(3)Ba(OH)2溶液的物质的量浓度是________;

(4)过滤所得浊液的目的是________;

(5)此空气样品中含CO2的体积分数为________;

(6)本实验中,若第一次滴定时使用的酸式滴定管未经处理,即注入第二种标准盐酸,并进行第二次滴定,使测定结果________(填“偏大”“偏小”或“无影响”).

题型:填空题

用水泥胶结指数评价固井质量方法的优点在于,在一定条件下可以大大降低水泥候凝时间不足和()错误造成的不利影响。

A.测井刻度

B.测井时间

C.测井速度

D.测井深度

题型:填空题

某项工程合同总收入为5000万元,到本期末累计完成工程进度的60%,已知按完工百分比法确认的当期合同收入为1000万元,则上期末累计完成的工程进度为( )。

A.10%

B.20%

C.30%

D.40%

题型:填空题

A320飞机最大巡航高度为()英尺,巡航速度为()公里/小时。

A、10000英尺/900公里

B、42000英尺/800公里

C、12800英尺/700公里

D、39000英尺/800公里

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