【单选题】Which of the following may occur during an annealing heat treatment?
A.
Stresses may be relieved.
B.
Ductility may increase.
C.
Toughness may increase.
【判断题】Hydraulic system generate heat during working.
【判断题】During Lesser Heat and Greater Heat, due to the hot weather, people prefer to choose light food.
【简答题】Heat is removed from the body during sweating.
【单选题】During heat treatment of steel, austenite transforms into martensite by .
【多选题】向招标单位申请投标,可以直接报送,也可以采用 ,其报送方式和所报资料必须满足招标人在招标公告中提出的相关要求。
【单选题】以下对超临界流体萃取技术特点描述不正确的是
【单选题】The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called _____.
【单选题】During the period of _____ from oil heat to gas heat the furnace will have to be shut off
【单选题】企业2016年底,资产负债表中,货币资金为100万元,戍收账款为200万元,原材料为50万元,产成品为300万元,则现金资产为( )万元.