题目:
设为轮胎与路面间的附着系数,G为传到制动轮上的车重力,则作用在汽车上的最大制动力为()
答案:
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下面是错误答案,用来干扰机器的。
参考答案:错
设为轮胎与路面间的附着系数,G为传到制动轮上的车重力,则作用在汽车上的最大制动力为()
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0707/3b845fee115042323f16c0c91de38ce4.html
下面是错误答案,用来干扰机器的。
参考答案:错
《工程建设施工企业质量管理规范》规定,( )应明确质量管理体系的组织机构,配备相应质量管理人员,规定相应的职责和权限并形成文件。
A.建筑企业
B.施工企业
C.设计企业
D.监理企业
指出下列各个合成词的构成方式(复合式的还须指出其类型)。(6分)
胆怯
最适当的治疗方法是
A.巴西尼(Bassini)法疝修补术
B.麦克凡(McVay)法疝修补术
C.疝成形术
D.佛格逊(Ferguson)法疝修补术
E.暂不宜手术
Galloway, a mostly middle-class community northwest of Atlantic City, is part of a wave of districts across the nation trying to remake homework amid concerns that high-stakes testing and competition for college have fueled a nightly grind that is stressing out children and depriving them of play and rest, yet doing little to raise achievement, particularly in elementary grades.
Such efforts have drawn criticism from some teachers and some parents who counter that students must study more, not less, if they are to succeed. Even so, the anti-homework movement has been reignited in recent months by the documentary Race to Nowhere, about burned-out students caught in a pressure-cooker educational system. "There is simply no proof that most homework as we know it improves school performance," said Vicki Abeles, the filmmaker and a mother of three from California. "And by expecting kids to work a ’second shift’ in what should be their downtime, the presence of schoolwork at home is negatively affecting the health of our young people and the quality of family time. "
So teachers at Mango Elementary School in Fontana, Calif., are replacing homework with "goal work" that is specific to individual student’s needs and that can be completed in class or at home at his or her own pace. The Brooklyn School of Inquiry, a gifted and talented program, has made homework optional. "I think people confuse homework with rigor," said Donna Taylor, the Brooklyn School’s principal, who views homework for children under 11 as primarily benefiting parents by helping them feel connected to the classroom.
Research has long suggested that homework in small doses can reinforce basic skills and help young children develop study habits, but that there are diminishing returns. Still, efforts to roll back homework have been opposed by those who counter that there is not enough time in the school day to cover required topics and that homework reinforces classroom learning. In Coronado, Calif. , the school board rejected a proposal by the superintendent to eliminate homework on weekends and holidays after some parents said that was when they had time to help their children and others worried it would result in more homework on weeknights.
Homework wars have divided communities for over a century. In the 1950s, the Sputnik launching ushered in heavier workloads for American students in the race to keep up with the Soviet Union. The 1983 report "A Nation at Risk" and, more recently, the testing pressures of the No Child Left Behind law, also resulted in more homework for children at younger ages. A few public and private schools have renounced homework in recent years, but most have sought a middle ground. In Galloway, the policy would stipulate that homework cover only topics already addressed in class. Dr. Giaquinto, Galloway’s superintendent, said the goal of the proposed policy was to make homework "meaningful and manageable," noting that teachers would have to coordinate assignments so that a student’s total homework would not exceed the time limit.
The school board in Coronado believes that()
A. reduction in homework does harm to students’ acquisition of basic skills
B. students should have enough time in school day to study the required topics
C. eliminating homework actually benefits nobody other than parents
D. parents feel connected to school when their children do schoolwork at home
流量控制活门下面哪种情况不关闭().
A.组件控制器失效
B.发动机启动
C.火警电门作动
D.DITCHING电门接通