详图与被索引的图样不在同一张图内，详图符号上半圆注明详图的编号，下半圆注明被索引图样的图纸编号。( )
参考答案：对
—Have you heard from Nelly recently？
—Yes. I his letters and cards many times while I was in Italy.
A．have received
B．received
C．had received
D．would receive
血清总胆固醇含量升高见于（）
A.肺结核
B.重度贫血
C.严重肝病
D.甲状腺功能亢进
E.肾病综合征
