显示器屏幕中显示信号机位置、编号、信号机的状态等,是以坐标的方式显示前方()米以内的

题型:单项选择题

问题:

显示器屏幕中显示信号机位置、编号、信号机的状态等,是以坐标的方式显示前方()米以内的线路限速情况。

A、1000

B、2000

C、3000

D、4000

考点:电力机车司机考试电力机车司机考试题库
题型:单项选择题
阅读理解。
                                                      NOTICE (通知) 
       We will go to Green Hill for a picnic this Friday. We will start at 8 o'clock in the
morning. We will get together at 7:45 am in front of the school. Our teacher Miss Gao will
wait for us there. It will take (花费) us about two hours to get to Green Hill by bus. We
will play there for about five hours. Miss Gao will sing some songs for us there.
       All the students, twenty-three boys and eighteen girls must join (必须参加) in the
picnic. Don't be late on Friday morning! I'm sure we will have a good time!
                                                         Students' Union (学生会)
                                                          Tuesday, March 10th
1. When will the students go on a picnic?
[ ]
A. On March 10th.
B. On March 11th.
C. On March 12th.
D. On March 13th.
2. Where will they meet in the morning?
[ ]
A. On Green Hill.
B. In Miss Gao's home.
C. In front of the school.
D. In the classroom.
3. How will they go to Green Hill?
[ ]
A. By bike
B. By bus.
C. By train.
D. By plane
4. What time will they get back from Green Hill?
[ ]
A. At about 3:00 pm.
B. At about 10:00 am.
C. At about 1:00 pm.
D. At about 7:45 am.
5. How many people will go to Green Hill for the picnic?
[ ]
A. Eighteen.
B. Twenty-three.
C. Forty-one.
D. Forty-two.
题型:单项选择题

接触网作业车编组运行时,不超过()辆,前进方第一位接触网作业车为本务机,整列车须按规定进行制动机试验,确认制动性能良好。

A.12

B.10

C.15

题型:单项选择题

有如下程序:  #include"iostream.h"  void main( )  {   int x=1,a=0,b=0;   switch(x) {    case 0:b++;    case 1:a++;    case 2:a++;b++;   }  cout < < "a=" << a < < "," < < "b=" < < b;  } 该程序的输出结果是( )。

A. a=2,b=1

B. a=1,b=1

C. a=1,b=0

D. a=2,b=2

题型:单项选择题

Almost every day the media discovers an African American community fighting some form of environmental threat from land fills, garbage dumps, petrochemical plants, refineries, bus depots, and the list goes on. For years, residents watched helplessly as their communities became dumping grounds.
But citizens didn’t remain silent for long. Local activists have been organizing under the mantie of environmental justice since as far back as 1968. More than three decades ago, the concept of environmental justice had not registered on the radar screens of many environmental or civil rights groups. But environmental justice fits squarely under the civil rights umbrella. It should not be forgotten that Dr. Martin Luther King Jr. went to Memphis on an environmental and economic justice mission in 1968, seeking support for striking garbage workers who were underpaid and whose basic duties exposed them to environmentally hazardous conditions.
In 1979, a landmark environmental discrimination lawsuit filed in Houston, followed by similar litigation efforts in the 1980s, rallied activists to stand up to corporations and demand government intervention.
In 1991, a new breed of environmental activists gathered in Washington, D.C. , to bring national attention to pollution problems threatening low-income and minority communities. Leaders introduced the concept of environmental justice, protesting that Black, poor and working-class communities often received less environmental protection than White or more affluent communities. The first National People of Color Environmental Leadership Summit effectively broadened what "the environment" was understood to mean. It expanded the definition to include where we live, work, play, worship and go to school, as well as the physical and natural world. In the process, the environmental justice movement changed the way environmentalism is practiced in the United States and, ultimately, worldwide.
Because many issues identified at the inaugural summit remain unaddressed, the second National People of Color Environmental Leadership Summit was convened in Washington, D.C. , this past October. The second summit was planned for 500 delegates ; but more than 1,400 people attended the four-day gathering.
"We are pleased that the Summit Ⅱ was able to attract a record number of grassroots activists, academicians, students, researchers, planners, policy analysts and government officials. We proved to the world that our movement is alive and well, and growing," says Beverly Wright, chair of the summit. The meeting produced two dozen policy papers that show powerful environmental and health disparities between people of color and Whites.

The word "grassrot" underlined in Paragraph 6 refers to ______.

A.basic level

B.middle class

C.peasant

D.worker

题型:单项选择题

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