【简答题】土壤分为一类土、二类土、三类土和四类土。在城市市区和市郊区一般采用( )类土。
【判断题】普氏分类法将土壤和岩石划分为一二类土、三类土、四类土、软石、次坚石、普坚石和特坚石等七大类。
【简答题】如图3所示,人工开挖一矩形基坑,已知土壤类别为四类土,开挖时左右两侧放坡,上下两侧支挡土板,挖土平均厚度为2.20 m,具体尺寸如下图所示。按《云南省建筑工程消耗量定额》计算人工挖基坑的定额工程量和省定额合价。 《云南省建筑工程消耗量定额》土方工程均按三类土编制,如实际是一、二、四类土时,分别按三类土相应定额子目乘以下列系数。
【单选题】听力原文:M: Hey, Jane. What' s so interesting? W: What? Oh, hi, Tom. I' m reading this fascinating article on the societies of the Ice Age. M: The Ice Age? There weren't any societies then, just groups of...
A.
They lived in groups and were cave people.
B.
There were societies in Ice Age.
C.
They were advanced in arts.
D.
They had a smart way of building shelters.
【判断题】八选一数据选择器 74LS151 有三个地址输入端 A 2 、 A 1 、 A 0 ,八个数据输入端 D 0 ~D 7 , 一个数据输出端 Y 。
【单选题】听力原文:M: Hey, Jane. What's so interesting? W: What? Oh, hi, Tom. I'm reading this fascinating article on the societies of the Ice Age during the Pleistocene period. M: The Ice Age? There weren't any so...
B.
They traveled in groups.
C.
They had an advanced language.
D.
They ate mostly fruit.