Everyone knows that in the city of Pisa
in Italy there is a tower that "leans". The tower is built entirely of white marbles. The walls are 13 feet thick at its base. It has eight storeys and is 179 feet high. There is a stairway of 300 steps built into the walls, which leads to the top. At the top of the tower, you’ll see the city and the sea. The sea is six miles away. At the top, the tower is 16.5 feet out of the perpendicular. In other words, it "leans" over by 16.5 feet. If you were to stand at the top and drop a stone to the ground, it would hit 16.5 feet away from the wall at the bottom of the tower! What makes it lean Nobody really knows the answer. Of course, it wasn’t supposed to lean when it was built; it was supposed to stand straight. It was intende [单选题]停电检修时,与停电设备有关的变压器和电压互感器,还必须从( )断开,防止向停电设备反送电。
A.高压侧 B.低压侧 C.电源侧 D.上部 [填空题]表象的两个特征是();()。
[多项选择]机车车辆冲突事故的主要隐患是车务和( )两方面。
A. 作业人员观念淡薄 B. 机务 C. 机车车辆配件脱离 D. 擅自关闭“三项设备” [判断题]弹性成本预算的编制方法包括因素法和百分比法。 ( )
[填空题]Scotland is a unique place. It has some of the most beautiful cities in Europe, a living evidence of a (36) and proud past.
Its people’s ancient love to the hard land and their struggle against nature are (37) within the wails of the Angus Folk Museum. You are able to get a feel of the (38) rural atmosphere of times past from the everyday (39) displayed in this museum. Perhaps the most (40) moment for Scottish autonomy is the one (41) inside this ancient abbey of Arbroath, where, in 1320, the Declaration of Independence was celebrated, at the instigation of King Robert the Bruce, He carried out the plan for autonomy drawn up by the great popular hero William Wallace, to whom cinema has (42) the wonderful film Braveheart, the winner of five Oscars. The Glamis Castle is often remembered for being the (43) of King Macbeth and Queen Elizabeth in her childhood. Among the most regular [判断题]1.79.第79题
导线的材料一般是铜、铝、钢和铝合金等。 A.正确 B.错误 [单项选择]下述对于妊娠合并风湿性心脏病妇女的护理措施,有利于预防产时心衰发生的是( )。
A. 宫缩时鼓励孕妇活动以减轻疼痛 B. 如有中重度贫血应给予输血治疗 C. 鼓励产妇多进食,以增加体力 D. 第二产程时,指导产妇用力屏气 E. 第二产程结束后用砂袋置于腹部 [单项选择]汽车SRS气体发生剂引燃后产生大量的()。
A. NO2 B. N2 C. O2 D. CO2 [填空题]
A-- COMPRESSED GAS ( )腐蚀品 ( )此面向上B--CORROSIVES C--DO NOT CRUSH D--DO NOT STOW IN DAMP PLACE E--HANDLE WITH CARE F--HAZARDOUS GOODS G--KEEP AWAY FROM HEAT H--KEEP FIAT I--KEEP IN DRY PLACE J--KEEP IN HOLD K--KEEP UPRIGHT L--NOT TO BE STOWED UNDER HEAVY CARGO M--RADIOACTIVE SUBSTANCE N--STOW IN COOL PLACE O--THIS SIDE UP [单选题]《普速铁路技术管理规程》关于轨道部分的规定:新建、改建铁路正线采用60 kg/m钢轨的()。
A.普通线路 B.区间无缝线路 C.普通无缝线路 D.跨区间无缝线路 [判断题]车务系统各岗位作业人员应按规定穿着铁路制服。车站、旅客列车不得另行制作“品牌服”的。
A.正确 B.错误 [单选题]以下( )出血最具危险性,如不及时处理将造成生命危险。
A.毛细血管出血 B.静脉出血 C.动脉出血 [判断题]液压传动机械的液压缸是用来将油液的压力能转换为机械能的能量转换装置。
( ) A.正确 B.错误 [多选题]本小题1分双母线接线方式需要接入母线电压作为闭锁条件,一般可采用()开放。
A.低电压 B.零序 C.负序 D.过电压 我来回答: 提交
|