【多选题】以下属于灌浆材料性质要求的有( )。
B.
稳定性好,在常温、常压下较长时间存放不改变其基本性质
D.
浆液对注浆设备、管道、混凝土结构物等无腐蚀性
【判断题】In the Northern Wei Dynasty, the high officials and aristocrats crazily enclosed land.
【简答题】火力发电厂的高压加热器和低压加热器一般采用____。
【判断题】In high northern latitude, you can sometimes see a strange kind of cloud high in the sky, if the sky is clear after sunset.
【单选题】已经甲乙两个方案投资收益率的期望值分别为10%和12%,两个方案都存在投资风险,在比较甲乙两方案风险大小时应使用的指标是( )。
【多选题】列车运行图的分类按照使用范围分类 为( )。
【单选题】When a high pressure system is centered north of your vessel in the Northern Hemisphere ______.
A.
You should experience hot,moist,clear weather
B.
The wind direction is generally easterly
C.
The winds should be from the southwest at your location
D.
The winds should be brisk
【单选题】【单选】The wind circulation around a high pressure center in the Northern Hemisphere is_____.
A.
counterclockwise and moving towards the high
B.
counterclockwise and moving outward from the high
C.
clockwise and moving towards the high
D.
clockwise and moving outward from the high
【简答题】请简述男士穿着西装穿着的三色原则、三一定律和三大禁忌。