对从事危险品的生产经营活动实行后(前置)审批和严格监督的制度。
参考答案:错
to reach them on the phone, we sent an email instead. [ ]
A. Fail
B. Failed
C. To fail
D. Having failed
甲亢浸润性突眼的原因为( )
A.上眼睑肌痉挛回缩
B.眼球后组织的浸润水肿
C.眼球浸润水肿
D.神经兴奋紧张
E.眼球后形成新生物