二级防护标准为()。
A、全身
B、内置式重型防化服
C、全棉防静电内外衣
D、封闭式防化服
E、正压式空气呼吸器或全防型滤毒罐
参考答案:A, C, D, E
Which of the following statements is implied in the passage
A.Anthropologists have nothing to do with linguists.
B.Linguists have nothing to do with anthropologists.
C.The study of languages casts light upon the study of cultures.
D.The study of cultures casts no light upon the study of languages.
48岁女性肥胖患者,3年前超声显示肝右叶有一2cm×2cm大小的实性强回声结节,外周无声晕,余部肝实质回声正常。现在超声显示肝实质回声增强,光点细密,原右叶强回声呈边缘清楚的低回声,内无血流信号,可能的诊断是
A.非均匀性脂肪肝B.肝脓肿与脂肪肝C.炎性假瘤与脂肪肝D.脂肪肝与肝腺瘤E.脂肪肝与血管瘤