提示有肝癌可能的是()
A.胃液分析
B.PCR技术检查病原
C.甲胎蛋白(AFP)
D.血、尿淀粉酶
E.血清胆红素定量测定,尿胆红素和尿胆原试验
参考答案:C
–Shall we go out for a walk?
–Sorry. This is not the right __ to invite me. I am too tired to walk.
A.moment
B.situation
C.place
D.Chance
溢流阀调整无效压力表无压力是什么原因?