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Passage Two Questions 61 to 65 are based on the following passage. In some ways, the United States has made spectacular progress. Fires no longer destroy 18,000 buildings as they did in the Great Chicago Fire of 1871, or kill half a town of 2,400 people, as they did the same night in Peshtigo, Wisconsin. Other than the Beverly Hill Supper Club fire in Kentucky, in 1977, it has been four decades since more than 100 Americans died in a fire. But even with such successes, the United States still has one of the worst fire death rates in the world. Safety experts say the problem is neither money nor technology, but the indifference of a country that just will not take Fires seriously enough. American fire departments are some of the world's fastest and best equipped. They have to be. The United States has twice Japan 's population, and 40 times as many Fires. It spends far less on preventing fires than on fighting them. American Fire-safety lessons are aimed almost entirely at children, who die in disproportionately large numbers in fires but who, contrary to popular myth, start very few of them. Experts say the fatal error is an attitude that fires are not really anyone's fault. That is not so in other countries, where both public education and the law treat fires as either a personal failing or a crime. Japan has many wood houses; of the estimated 48 fires in world history that burned more than 10,000 buildings, Japan has had 27. Penalties for by negligence can be as high as life imprisonment. In the United States , most education dollars are spent in elementary schools. But the lessons are aimed at too limited an audience; just 9 percent of all fire deaths are caused by children playing with matches. The United States continues to rely more on technology than laws or social pressure. There are smoke detectors in 85 percent of all homes. Some local building codes now require home sprinklers. New heaters and irons shut themselves off if they are tipped.
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【单选题】以下是一个函数定义,下列说法正确的是() float max(float x,float y) { float m; m=x>y?x:y; return m; }
A.
函数头float max(float x,float y)可以简化为float max(float x, y)
B.
函数头float max(float x,float y)可以写为void max(float x, float y)
C.
函数体中的 return m; 语句是多余的,可以省略
D.
函数max()的功能是求两个实数的最大数
【单选题】六味地黄丸加何药而成肾气丸
A.
桂枝、附子
B.
知母、黄柏
C.
枸杞、菊花
D.
五味子
E.
麦冬、五味子
【多选题】在WINDOWS中,下列关于文件夹的叙述,正确的是________.
A.
文件夹只能建立在根目录下
B.
文件夹可以建立在根目录下,也可以建立在其他的文件夹下
C.
文件夹的属性可以改变
D.
文件夹的名称可以改变
【单选题】关于滋养细胞肿瘤的诊断,叙述错误的是
A.
hCG水平是葡萄胎后滋养细胞肿瘤的主要诊断依据
B.
肺转移以右侧肺及中下部较为多见
C.
在子宫肌层或子宫外转移组织中若见到绒毛或退化的绒毛阴性,可诊断为侵袭性葡萄胎
D.
足月产、流产和异位妊娠后HCG多在 2 周左右转为阴性
【单选题】若程序中定义函数 float myadd(float a,float b) {return a+b;} 则下列对该函数的声明错误的是( )。
A.
float myadd(float a,b);
B.
float myadd(float b,float a);
C.
float myadd(float,float);
D.
float myadd(float a,float b);
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【简答题】以下函数的功能是【 】。 float av(a,n) float a[]; int n; { int i;float s; for(i=0,s=0;i<n;i++)s=s+a[i]; return s/n;}
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【单选题】如果想缩短广播的周期,下述哪些方法是正确的?()
A.
在RNC配置数据修改SIB11为“不广播”;
B.
在RNC配置数据修改SIB5为“不广播”;
C.
进行邻区的删减,优化邻区;
D.
通过修改基站配置数据可以达到缩短周期的目的
【单选题】某连续LTI系统的阶跃响应为【图片】,则系统( )。
A.
一定是因果的
B.
一定是稳定的
C.
一定是因果且稳定的
D.
特性无法确定
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