下列“原发性肝癌”病理特点,哪项不对()
A.常合并肝硬化
B.门脉主干癌栓发生率较高
C.肺是最常见的转移脏器
D.瘤内可有脂肪沉积
E."动-静脉瘘"仅见于原发性肝癌
参考答案:E
I ______ peaceful countryside ______ noisy cities while my sister prefers _____ in the modern cities.
A.would rather; than; living
B.prefer; to; living
C.would rather; than; to live
D.prefer; to; to live
CO的卫生标准为(),CH3OH的卫生标准为()。