【单选题】Efficiency occurs when
A.
total surplus is maximized.
B.
producer surplus is maximized.
C.
all resources are being used.
D.
consumer surplus equals producer surplus.
【单选题】砖砌体工程在施工时,相邻施工段的砌筑高度差不允许超过一个楼层,也不宜大于( )
【判断题】单片机的位数代表的含义是CPU一次同时处理的二进制数据的位数。
【单选题】DHT11与单片机之间的一次完整的数据传输为40bit,其中17-24位数据代表的含义为()
【单选题】57砖砌体工程在施工时,相邻施工段的砌筑高度差不宜超过一个楼层,也不宜大于( )
【多选题】关于多潘立酮(吗丁啉)的临床应用,正确的有()
A.
属于外周性多巴胺受体拮抗剂,可促进上胃肠道的蠕动和张力恢复正常
B.
增强食道的蠕动和食道下端括约肌的张力,抑制恶心、呕吐
【单选题】A recessionary gap occurs when
A.
real GDP is less than potential GDP.
B.
nominal GDP is less than potential GDP.
C.
high rates of inflation occur.
D.
nominal GDP is greater than potential GDP.
【单选题】Hyperinflation occurs when
A.
the inflation rate rises.
B.
the inflation rate declines.
C.
the inflation rate is extremely high.
D.
the inflation rate is extremely low.