【多选题】关于温度对张力和弧垂变化的影响,下列说法正确的是( )。
C.
气温降低,架空线缩短,张力增大,有可能导致断线。
D.
气温升高,线长增加,弧垂增大,导致对地等跨越电气间距减少,
E.
最高温度时电流引起导线温升又可能超过允许值,导线因温度升高强度降低而断线。
【单选题】某48岁女士,21年前生育一女,采用宫内避孕,现月经稀少1年,周期由原来的28天变为21天,自觉已进入更年期。其正确的取环时间是(2018年护考题)
【简答题】根据语境及所给汉语提示,写出所缺单词。 1. The sun rises in the east and goes down in the _________( 西方 ). 2. The only decoration in the room was a picture _________( 在 ...... 上面 ) the bed. 3. Although it was very cold i...
【单选题】某48岁女士,21年前生育一女采用宫内避孕,现月经稀少1年周期由原来的28天变为21天,自觉已进入更年期。其正确的取环时间是
【简答题】一. 根据语境及提示,写出所缺单词。 1. The sun rises in the east and goes down in the ______(西方). 2. The only decoration in the room was a picture _______(在......上面) the bed. 3. Although it was very cold in winter, th...
【简答题】一.听故事《苏格兰玛 l 丽女王》 Chapter 3 1. Finally , who became Mary’s second husband? A . Don Carlos B. Robert Dudley C. Henry Darnley 2. What should a king have to do every day? A king has to _______hundre...
【多选题】我国各民族的饮食民俗形成一定的惯例,主要表现在( )等几方面。
【单选题】某48岁女士,21年前生育一女采用宫内避孕,现月经稀少1年,周期由原来的28天变为21天,自觉已进入更年期。其正确的取环时间是
【简答题】听下面一段材料,回答第1-4题。 1. On which floor do Mary and John live? A. On the 8th floor. B. On the 18th floor. C. On the 80th floor. 2. What did the neighbors do when they knew that the children were in the fla...