【单选题】有关沥青路面渗水系数试验过程描述:①不适用于公称粒径大于26.5mm的下面层或基层混合料; ②测试中当水面下降100ml开始,每隔60s读记仪器管刻度一次; ③水面下降600ml时停止试验; ④水面下降很慢时,从水面下降至100ml开始,测得3min的渗水量即可停止; ⑤同一个检测路段选择5个测点测定深水系数,取其最大值作为试验检测结果; 完全正确的一组为()
【判断题】兰科植物花会因子房呈 180 度角扭转,使唇瓣位于上方。
【单选题】《艰苦岁月》是现代雕塑家( )表现革命历史题材的圆雕作品。
【单选题】In order to prevent desertification,the author proposes
A.
making good use of international aids
B.
developing a sustainableagricultural economy
C.
gaining international support
D.
converting agricultural land intoforest
【单选题】Jetties are designed to narrow the channel at the mouth of the fiver in order to prevent silt from being brought to the sea.
【判断题】兰科植物花会因子房呈 180 度角扭转,使唇瓣位于上方。
【多选题】有关沥青路面渗水系数试验的说法中,正确的有()。
A.
不适用于公称最大粒径大于26.5mm的下面层或基层混合料
C.
同一个检测路段选择5个测点测定渗水系数,取其最大值作为检测结果
D.
测试中当水面下降100ml时开始记时,每隔60s读记一起管刻度一次
【单选题】《艰苦岁月》是现代雕塑家( )表现革命历史题材的圆雕作品。
【单选题】工业机器人第( )轴工作时,按下+键,该轴向下运动?
【简答题】In order to pr stress from being set up in the metal, expansion joints are fitted which ________ the stress by allowing the pipe to expand or contra ct freely. A) relieve B) reconcile C) reclaim ...