主页
学科
搜索
账户
常见问题
当前学科:锚设备
题目:
单选
电动液压起锚机的特点是()。
①操作平稳;
②变速性能好;
③制造技术和维护保养要求高。
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
高速铁路隧道出口设置缓冲结构的原因是什么?有哪些相应的工程措施?
传感器特性是什么?
某投保人在投保时对被保险人具有保险利益,三年后,投保人与被保险人之间发生冲突,导致投保人丧失对被保险人的保险利益。如果此时发生了保险事故,导致被保险人死亡,保险人承担保险责任的情况是()
明代规定:臣民私事上言于朝廷用()
在开车或者检修工作中,只要调度允许,我们随时都可以打开循环水界区阀门。()
国际电工委员会(IEC)296技术规范中,油品的运动粘度的分类是以()为基准的分类。
Shopping habits in the United States have changed greatly in the last quarter of the 20th century. (1) in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was (2) on both sides with many (3) businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. (4),some shops offered (5) .These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. (6) in the 1950s, a change began to (7) .Too many automobiles had crowded into Main Street (8) too few parking places were (9) shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces (10) the city limits. Open space is what their car-driving customers needed. And open space is what they got (11) the first shopping centre was built. Shopping centres, or rather malls, (12) as a collection of small new stores (13) crowded city centres. 14 by hundreds of free parking space, customers were drawn away from (14) areas to outlying malls. And the growing (16) of shopping centres led (17) to the building of bigger and betterstocked stores. (18) the late 1970s,many shopping malls had almost developed into small cities themselves. In addition to providing the (19) of one stop shopping, malls were transformed into landscaped parks, (20)benches, fountains, and outdoor entertainment. 请在11处填上正确答案()
关于楔形角α的描述,错误的是()
治疗要获得病人的知情同意,其实质是()
从外语教学角度看,不同的人中介语的发展规律大致相同,这一学习发展过程被称作()