— ___________ anybody hurt?
— No, everyone was safe.[ ]
A. Does
B. Did
C. Were
D. Are
答案:B
可用作银盐感光材料的是()
A.硫化银
B.氯化银
C.氟化银
D.硫酸银
E.硝酸银
根据超声声像图,最可能的诊断为()
A.睾丸鞘膜积液B.精索鞘膜积液
C.阴囊壁水肿
D.肠疝
E.睾丸精索鞘膜积液