下列哪一项不是密闭空间的危害?
A.吸入有毒气体
B.缺氧
C.缺水
参考答案:C
I jumped on the train, but it _________ ready.[ ]
A. aren't
B. wasn't
C. isn't
D. doesn't
患者,男,49岁,食欲不振、乏力、腹胀3个月,右季肋部疼痛1个月。实验室检查:甲胎蛋白(AFP)300μg/L。
为进一步确诊还应做哪些检查()
A.行AFP与CEA检查
B.血清脂肪酶生化检查
C.酶学检查
D.DSA
E.腹腔镜
F.细针肝穿刺活检