网点应用上采取多少度角可以避免撞网（） ["15度","45度","30度","75度"]
防水卷材在厚度和宽度上有不同的规格，使用时有（）两种铺设方式。 ["环向铺设和纵向铺设","冷粘法和热合法","有钉铺设和无钉铺设","纵向铺设和无钉铺设"]
We believe that sales will increase soon; （）, production costs will be going up also. ["so","thus","on the other hand","however"]
魏晋南北时期时形成的三省是指（） ["中书省","门下省","散骑省","尚书省"]
土工织物抵抗扩大破损裂口的能力用撕裂强度表示，撕裂强度试验试件为（）。 ["圆形","哑铃状","矩形75mm×150mm","正方形"]
消费者行为。
