皮皮学，免费搜题
登录
搜题
【单选题】
柱下钢筋混凝土独立基础,当有垫层时,底板钢筋保护层厚度不宜小于()mmA.
15
B.
20
C.
35
D.
60
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】There are ________ to coal and petroleum, but water cannot be replaced.
A.
conflicts
B.
alternatives
C.
source
D.
distribution
【单选题】There are ____ to coal and petroleum, but water cannot be replaced.
A.
alternatives
B.
replaced
C.
enabling
D.
fracturing
【单选题】Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasing rate. The supply of these【B1】is limited and electric power is very【B2】...
A.
materials
B.
metals
C.
reserves
D.
fuels
【判断题】Because their properties differ greatly, petroleum asphalt should not be confused with coal tar. ( )
A.
正确
B.
错误
【单选题】Fossil fuel contains ① coal; ② Petroleum; ③ Natural gas; ④ Combustible ice.
A.
① , ② ；
B.
② , ④ ；
C.
①, ②, ③, ④.
D.
--
【简答题】Biomass is the only new energy that can replace fuel on a large scale. (coal / petroleum)
【单选题】Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasing rate. The supply of these【C1】______is limited and electric power is ve...
A.
materials
B.
metals
C.
reserves
D.
fuels
【单选题】某基础埋深5m,下列关于基底附加应力说法正确的是()
A.
基底附加应力大于基底压力
B.
基底附加应力等于基底压力
C.
基底附加应力小于基底压力
D.
基底附加应力与基底压力无关
相关题目：
参考解析：
知识点：
题目纠错 0
发布
