关于Sm抗体的叙述,正确的说法是()
A.诊断SLE敏感性高
B.是诊断SLE的标记抗体
C.以上都对
D.其阳性代表病情活动
E.其阳性提示有狼疮性肾炎存在
参考答案:B
I told her we weren’t going to be friends any more because she couldn’t ________ .
A.keep her word
B.have her word
C.keep her words
D.have her words
机械通气病人气道内一次吸痰时间不超过()
A.1min
B.2min
C.3min
D.15s
E.30s