下列文献哪个是二次文献?()
A.文摘
B.会议文献
C.辞典
D.百科全书
参考答案:A
John told me that he had lost his key to the car, but he didn't really lose it-that's just a(an)________.[ ]
A.fool
B.event
C.performance
D.trick
对该患者诊断考虑为:球部 * * 断裂,但无尿外渗,应做哪项处理
A.耻骨上膀胱造瘘B.耻骨上膀胱穿刺造瘘C.留置导尿D.会阴血肿清除+ * * 断端吻合E. * * 会师