The boy in brown is your neighbor, Ted, he? [ ]
A.doesn't
B.don't
C.isn't
D.aren't
答案:C
肝硬化腹水患者的腹水性质是()
A.渗出液
B.漏出液
C.血性液
D.脓性液
E.乳糜液
()以上的电力线路称为高压线路。
A.1kV
B.10kV
C.20kV
D.110kV