作为机体获得对HBV免疫力及乙型肝炎患者痊愈的指标是()
A.HBsAg(+)
B.抗-HBs(+)
C.HBeAg(+)
D.抗-HBc(+)
E.抗-HBe(+)
参考答案:B
When dry chemical extinguishers are used to put out class B fires,there is a danger of reflash because dry chemical().
A.is not an effective agent on Class B fires
B.does little or no cooling
C.dissipates quickly
D.is rapidly absorbed by the liquid
在1832年的英国议会改革中,首次进入议会的是()
A.金融资产阶级
B.土地贵族
C.工业资产阶级
D.工人资产阶级