2017年一级建造师机电工程模拟试题.doc

2017年一级建造师机电工程模拟试题 2017年一级建造师机电工程模拟试题提要： 来自 2017年一级建造师机电工程模拟试题 一、单项选择题 、在低速而有冲击的场合,常采用轴承。 A向心轴承 B圆锥滚子轴承 c滑动轴承 D圆柱滚子轴承 2、涡轮蜗杆的优点是。 A轴向力大 B传动比大 c压力角大 D单向传动 3、只传递扭矩而不承受弯矩或弯矩很小。 A主轴 B转轴 c传动轴 D心轴 4、正弦交流变化电源的电压加到负载电感的两端,产生的交流电流的变化规律与电压。 A波行相同,相位一致 B波形不同,相位超前 c波形相同,相位滞后 D波形不同,相位一致 5、国家标准规定,不论互感器一次侧电流额定值大小为多少,互感器二次侧电流额定值为不变。 A1A B3A c5A D10A 6、交流电压互感器不论一次电压U高低多少,二次电压额定值通常为。 A100v B110v c22V D5ooV 7、流体的阻力是造成能量损失的原因之一是,由于流体的粘性和引起的管路沿程损失。 A惯性 B流动性 c压缩性 D膨胀性 8、热传递一般有三种不同的方式,即导热、辐射。 A传热 B热对流 c放热 D反射 9、有反馈存在,按进行控制,是自动控制系统主要的特点。 A偏差 B误差 c公差 D反馈 建造师试题下载：2017年一级建造师机电工程模拟试题 来自 Measures for the routine management of moral education in Middle SchoolsMethod of conventional management of moral education in middle schoolFirst, the guiding ideology:School moral education is an organic whole of the whole education work, always adhere to the school adhere to the moral education, education for this product, and actively promote the quality education, the school building efficient curriculum system of moral education, moral education, improve the sense of attraction and appeal, enhance the moral education work for through and timeliness. Teach everyone, service education and management education, and school moral education work must be with family education and community education closely together, to form a concerted pattern, and strive to create a good atmosphere for education, and to promote the all-round development of students, to establish a scientific moral education full of vigor the For long-term mechanism.Two, the goal of moral education:To guide the students to form the correct world outlook, outlook on life, values, to cultivate students unity and mutual assistance, honest and trustworthy, law-abiding, good quality, hard work, set a good XX students ideological quality, psychological quality and image quality. The formation of excellent moral education curriculum system and management system, the construction of school. The society, family moral education network, t