中年女性,超声下腹横切面如图,箭头所示为()。
A.子宫钙化环
B.宫内节育器
C.子宫肌瘤
D.妊娠囊
E.钙化的子宫肌瘤
参考答案:B
解析:子宫腔内见强回声光带,后伴彗星尾。
Mr. Smith______Jingzhou, and he has always had a good taste for the stories of Three Kingdoms. [ ]
A. accumulates
B. abandons
C. inspires
D. adores
下列哪些能起爆导爆管?()
A.雷管
B.导爆索
C.电火花
D.高压气体