2008雷诺考特摧毁项目对医生定义,其潜力属于B级的是()。
A.>100支鼻用激素/月
B.>50支鼻用激素/月
C.>40支鼻用激素/月
D.>10支鼻用激素/月
参考答案:B
It will be appreciated ______ you could effect shipment in two lots by direct steamer ______ you receive our L/C.( )
A.will, soon
B.if, as soon as
C.when, when
D. when, which
BT供电方式沿线路架设一条回流线,每隔一定距离在接触网和回流线内串联接入(),使电流沿回流线返回牵引变电所。