下列哪一项不适宜施行甲状腺次全切除术
A.中度原发性甲亢并发心律不齐
B.甲亢伴有气管压迫症状
C.青少年甲亢
D.继发性甲亢
E.单纯性甲状腺肿
参考答案:C
--- I haven’t seen Mary recently. And you?
--- Me neither. I’m afraid she _________ to her experiment for too long a time.
A.is devoting
B.was devoted
C.has been devoting
D.has been devoted
大体积混凝土所配制的混凝土拌合物,到浇筑工作面的坍落度不宜低于()mm。
A.110
B.130
C.160
D.170