原材料采用计划成本核算。2008年4月初结存原材料的计划成本为200000元,材料成本差异期初余额为4000元(超支);本月收入原材料的计划成本为400000元,材料成本差异为8000元(超支);本月发出材料的计划成本为350000元。据此,本月结存原材料的实际成本为()。 ["245000元","255000元","343000元","357000元"]
相变
Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and()refers to call issues that cause variations in timing or time of arrival. [" echo"," jitter"," packet loss"," digitized sampling"]
西方人文领域出现的“语言论转向”大致发生于()。 ["19世纪中","19世纪初","20世纪末","19世纪末"]
概括。
护理道德的具体原则包括不伤害原则、()、()、()。