资本主义地租
重力分离器依靠液滴(或固体微粒)与气体的()之差,把其从气体中分离出来。 ["A、比重","B、湿度","C、密度","D、粘度"]
下列出口商品单价写法正确的是()。 ["USD10/DOFOBSHANGHAI","USD100/PCCIFC3OSAKA","GBP100/SETCFRDALIAN","GBP500/MTCFRLONDON"]
公用管道中的燃气管道为()级。 ["A、GB1","B、GB2","C、GC1","D、GC2"]
具有镇静催眠作用的成分是() ["延胡索甲素","益母草碱","延胡索丑素","水苏碱","罗通定"]
两侧的下颌关节属于()肘关节属于()