反推互锁电磁线圈的作用是（）。A.只有当油门杆在慢车位时，该电磁线圈开锁，允许操作反

一简易照相机的镜头焦距为6cm，则该相机中胶片离镜头的距离应为

A．小于6cm

B．大于6cm，小于12cm

C．大于12cm，小于24cm

D．大于24cm

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.

Paragraph 3 implies that, in 1979, ______.

A．the environmental justice issues were first brought to court in Houston

B．environmental activists cooperated in defying the U.S. government

C．the government intervention helped promote environmental justice

D．environmental problems attracted the attention of the government

在进行月（季）度成本分析时，如果发现是属于预算定额规定的“政策性”亏损，则应该（）。

A．从控制支出着手，把超支额压缩到最低限度

B．增加收入，弥补亏损

C．采取增收节支措施，防止今后再超支

D．停止生产，等待机会

可引起呕吐、腹泻等消化道症状的是（）

A.霍乱弧菌

B.副溶血性弧菌

C.以上两者均是

D.以上两者均不是

下列给定程序中函数fun()的功能是：求出字符串中最后一次出现的子字符串的地址，通过函数值返回，在主函数中输出从此地址开始的字符串；若未找到，则函数值为NULL。例如，当字符串中的内容为abcdabfabcdx，t中的内容为ab时，输出结果应是abcdx。当字符串中的内容为abcdabfabcdx，t中的内容为abd时，则程序输出未找到的信息：Not found! 请改正程序中的错误，使它能得出正确的结果。 注意；不要改动main函数，不得增行或删行，也不得更改程序的结构。 试题程序： #include＜stdio.h＞ #include ＜conio.h＞ #include ＜string.h＞ char *fun(char *s,char *t) { char *p,*r,*a; /*************found**************/a=Null;while(*s) { p=s;r=t; while(*r) /*************found**************/if(r= =p) {r++;p++;}else break; if(*r==’\0’) a=s; s++; }return a; } main() {char s[100],t[100]，,*p;clrscr();printf("\nPlease enter string S: "); scanf("%s",s);printf("\nPlease enter substring t: "); scanf("%s",t);p=fun(S,t);if(p) printf("\nThe result is:%s\n",p);else printf("\nNot found!\n ");}