就地数显式压力表显示数据清晰，准确度不应低于（）级，回差应小于0.5%。
A、0.5
B、0.6
C、1.5
D、1.6
参考答案：A
In a competitive market, the gains to society are maximized under which of the conditions described belowMarginal Benefit Marginal Cost Producer Surplus Consumer Surplus（） ①A. $1.25$1.00$25 $25 ②B. $1.50$1.50$45 $30 ③C. $2.50$2.50$35 $35
A. ①
B. ②
C. ③
破伤风是破伤风梭菌经伤口感染引起的
