多发性骨髓瘤可分别有4种Ig增高,并以此分型,应除外的是()
A.IgG
B.IgA
C.IgM
D.IgD
E.IgE
参考答案:C
It is believed that when _____ she-wolf loses her babies, she seeks _____ human child to take its place. [ ]
A. a; a
B. the; a
C. a; 不填
D. the; the
闸阀阀杆与阀杆螺母容易咬住,可能的原因是()。
A、水泵超负荷
B、阀杆弯曲
C、螺纹损伤
D、两者为同一材质