根据GB5185标准的规定,“GMAW131”代表()。
A、埋弧焊
B、等离子弧焊
C、熔化极惰性气体保护焊
D、钨极氩弧焊
参考答案:C
My mother is very __________ because she hardly ever exercises.
A.health
B.healthily
C.healthy
D.unhealthy
Goodpasture综合征最常见的肾脏病理改变为()
A.毛细血管内增生性肾小球肾炎
B.膜性肾病
C.新月体性肾炎
D.微小病变
E.轻度系膜增生性肾小球肾炎