皮皮学，免费搜题
登录
搜题
【单选题】
按化学结构分类,美沙酮属于A.
哌啶类
B.
氨基酮类
C.
吗啡喃类
D.
苯吗喃类
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
【简答题】已知液压缸的活塞有效面积为 A,运动速度为v,有效负载为F L ,供给液压缸的流量为 q,压力为p。液压缸的总泄漏量为Δq,总摩檫阻力为F f 。试根据液压马达的容积效率和机械效率的定义,分析液压缸的容积效率和机械效率。
【单选题】2 According to the survey, what jobs are available to those dropouts?
A.
Jobs that are very dangerous.
B.
Jobs that are low-paying and boring.
C.
Jobs that have little chance of success.
D.
Jobs that require long working hours.
【单选题】2 According to the survey, what jobs are available to those dropouts? A. Jobs that are very dangerous. B. Jobs that are low-paying and boring. C. Jobs that have little chance of success. D. Jobs that ...
A.
B.
C.
D.
D
相关题目：
参考解析：
知识点：
题目纠错 0
发布
