患者男性,50岁,排尿过程中突然尿流中断,疼痛剧烈,改变体位后又可排尿,应考虑
A.肾结石
B.输尿管结石
C.膀胱结石
D.后 * * 结石
E.前 * * 结石
参考答案:C
The two dresses are very nice. I can’t decide _________。
A.which one should I buy
B.which one to buy
C.which one I to buy
D.which I bought one
在火灾过程中,()是造成烟气向上蔓延的主要因素。
A、烟囱效应
B、火风压
C、孔洞蔓延
D、水平蔓延