主页
学科
搜索
账户
常见问题
当前学科:地质测量及防治水技术
题目:
问答题
《煤矿防治水规定》对矿井主要泵房的安全出口如何规定?
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
汽油吹管火焰由内向外可分混合焰、燃烧焰、以下何项和氧化焰四层()
The requirements of presentations are as follows: (1)Electronic records presented, the records must state a ______ for presentation of the electronic records. (2)Both electronic records and paper documents presented, the documents must also state a ______ for presentation of the paper documents. (3)If an eUCP Credit allows for presentation of one or more electronic records. the beneficiary is responsible for providing a ______ to the Bank to which presentation is made signifying when the presentation is ______. (4)Each presentation under an eUCP Credit must ______ the eUCP Credit under which it is presented. (5) An electronic record must be ______.
SH320推土机工作装置的操纵系统为液压操纵。
通常认为,机车最大运用速度超过()就应该采用牵引电动机全悬挂.
中低比转数的离心泵()摩擦损失在机械损失中占主要成份。
()哪个版本的改动最易让人想到凤姐与贾蓉有“喛味关系”?
空间
由钻探取得某原状土样,经试验测得该土的天然重度γ=17kN/m3,含水量w=13.2%,土粒相对密度ds=2.69。土的孔隙率n最接近于()。
简述风沙土的成土过程特点及其特征。
若径向的切削量远大于轴时,则循环指令宜使用()