皮皮学，免费搜题
登录
搜题
【简答题】
速度为100～120km/h的正线道岔轨道静态经常保养水平容许偏差管理值为()mm。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】The reaction,A+2B→C+2D,is run three times. In the second run, the initial concentration of A is double that in the first run,and the initial rate of the reaction is double that of the first run. In th...
【单选题】A . It is stable. B . It is durable. C . It is inexpensive. D . It is sophisticated.
A.
B.
C.
【多选题】2What is the difference between D/P and D/A?
A.
D/P is much safer for the seller than D/A
B.
D/P after sight and D/A both adopt the draft.
C.
D/P belongs to collection but D/A can be remittance.
D.
D/P can be sight payment while D/A is only time payment.
相关题目：