普通三角形螺纹两牙侧向的夹角为()
A.α=45°
B.α=70°
C.α=60°
D.α=30°
参考答案:D
My grandfather is over seventy years old, he is very well because he always____.
A.drinks tea
B.sleeps late
C.plays computer games
D.takes exercises
男性,42岁。活动多时感右腰部钝痛,尿常规检查红细胞15~20个/HP,白细胞 3~5个/HP;B超右肾盂内可见2.5cm×2cm形状不规强回声;后伴声影。
还需要进行的检查是
A.KUB、IVU和24小时尿液分析
B.尿脱落细胞学检查
C.CT或MRI
D.膀胱镜检查