消化道大出血后,多数病人在24 h内常出现发热,多在38.5 ℃以上,持续3~5天降至正常。()
参考答案:错
______ readers said they were going to learn a new language. [ ]
A. A little
B. Little
C. Few
D. A few
熔池中()最先出现晶核。
A.焊趾上
B.焊根部
C.热影响区
D.熔合线上