烽火SDH设备中,以下不是产生R_LOS的原因是()。
A.交叉盘坏
B.交叉数据错误
C.光缆断
D.线路盘坏
参考答案:B
—Would you like me to carry the box for you?
—No, thanks._____. [ ]
A. My pleasure
B. With pleasure
C. I can manage it myself
D. That's all right
下列哪项不是狼疮活动的指标
A.明显血尿
B.急性肾衰竭
C.大量蛋白尿
D.C3下降
E.抗ds-DNA抗体(+)