热泵型空调器在制热时会结霜的元件是()
A.室内换热器
B.室外换热器
C.电子膨胀阀
D.毛细管
参考答案:B
—Ipreferspeaking to listeningin English learning.
—Oh, really? I think you should do well in______ of them.
A.both
B.neither
C.some
D.all
根据《陕西省会计管理条例》规定,大额资金支出和报销应当经总会计师与单位负责人联签。( )