紧缩型的SBA态势是一些因素共同作用的结果，这些因素是指（） ["环境威胁","环境优势","企业优势","企业劣势","竞争状况"]
在上升管桥管喷洒低压氨水的主要作用是无烟装煤。
Shims of different thicknesses are inserted between the shells to enable adjustment of （）. ["the bearing clearances","the bearing thickness","the bearing strength","the bridge hardne"]
机车综合无线通信设备（CIR）具有哪些特点？
一般投资人所采用尽职调查的方法有（） ["与管理团队交流","询问相关人员","根据已有资料判断","实地考察"]
陆源碎屑沉积
