含硫化合物对石油加工及产品应用有哪些影响?
家庭的功能不包括() ["生育功能","国际化功能","健康照顾功能","情感功能","经济功能"]
洛氏硬度计的栽样台及支座工作的硬度不得低于HRC()。 ["40","50","60"]
乳痈发于哺乳期称() ["内吹乳痈","外吹乳痈","不乳儿乳痈","乳发","乳疽"]
乳中结核,形如梅李,推之可移,不痛,日久,可中软成脓,溃后脓水清稀,杂有败絮状物,其诊断是()。 ["乳痨","乳疬","乳发","乳核","乳癖"]
以光敏液相固化法(SLA)为例,说出快速原型制造(RPM)的工作原理和主要工艺过程?