如图所示,甲是 ,乙是 ,可组成二个小灯泡的并联电路。(填“小灯泡”或“电流表”)
小灯泡 电流表
Software () refers to that the software to meet the specification must be produced.
A.test
B.support
C.development
D.process
#1、2、3高加空气门接至何处?