安全阀应垂直地安装,并尽可能装在锅炉汽包集箱()位置。 ["水平","最低","最高","任意"]
胆小管位于() ["A.肝板间","B.肝板内相邻肝细胞间","C.肝小叶之间","D.窦周隙内","E.肝板与血窦间"]
蛋白质的二级结构不包括() ["α-螺旋","β-转角","β-折叠","β-螺旋","无规则卷曲"]
肝脏的基本结构单位是() ["A.肝细胞","B.肝血窦","C.肝小叶","D.肝板","E.窦周隙"]
企业对外提供工业性劳务所获得的收入属于企业的()。 ["主营业务收入","其他业务收入","投资收益","营业外收入"]
远虽材若不及巡者,开门纳巡,位本在巡上。授之柄而处其下,无所疑忌,竟与巡俱守死,成功名,城陷而虏,与巡死先后异耳。这段文字用了什么样的论证方法?