【简答题】试利用腐蚀极化图说明 16Mn 钢制成的埋地管道穿孔后,如果采用 A3 钢修补,尽管这两种钢耐腐蚀性相同(在土壤中腐蚀速度相同),但新的 A3 钢补口总是比原 16Mn 钢管更快遭受腐蚀的原因。
【单选题】Which term refers to the total quantity and quality of goods and services that people living in an economic system can purchase?
B.
demand and supply schedule
【单选题】Which term refers to the total quantity and quality of goods and services that people living in an economic system can purchase?
B.
demand and supply schedule
【单选题】患者男性,28岁,因“头痛、头晕、恶心、呕吐、流涎、腹痛、全身乏力、视物模糊,口内有大蒜味”就诊。另有5名同事有同样症状,一同就诊。经询问患者工作中有有机磷农药接触史,查体确诊该6名患者均为有机磷农药中毒。可以选用的药物不包括()
【判断题】The term capacity refers to the maximum quantity an operating unit can process over a given period of time.