所有的肾小球均位于()
A.肾髓质
B.肾皮质
C.肾盂
D.肾盏
E.肾门
参考答案:B
Jackie made _____ possible for this family to have beautiful memories during hard time.
A.it
B.this
C.that
D.what
容易产生()的切割方法是碳弧气刨。
A.未熔缺陷
B.焊瘤缺陷
C.夹渣缺陷
D.夹碳缺陷