气相色谱法测定水中烷基汞时，洗脱液中的烷基汞可用苯或甲苯萃取。
参考答案：对
The first question was difficult , but ___ were quite easy.
A．the second
B．the other
C．another
D．the rest
男，28岁，无意中发现左下颌骨较对侧隆起，CT如图所示，最可能的诊断是（）
A.下颌骨齿釉细胞瘤
B.下颌骨巨细胞瘤
C.下颌骨角化囊肿
D.下颌骨根端囊肿
E.下颌骨含牙囊肿
