药芯焊丝CO2电弧焊焊丝熔敷速度快,熔敷效率(大约为85%~90%)和生产率都较()。
A、低
B、高
参考答案:B
After graduating from college,Itook some time off to go travelling,____ turned out to be awise decision. [ ]
A. that
B. which
C. when
D. where
胆经郁热之鼻渊,其鼻内分泌物特征是()
A.涕黄而量多
B.涕黄浊黏稠如脓样
C.涕多而黄浊,涓涓流出
D.涕稀如蛋清
E.涕少鼻干