枕骨大孔疝
A.头痛,呕吐,视盘水肿 B.呼吸骤停 C.昏迷,患侧瞳孔散大,对侧肢体偏瘫 D.血压升高,脉搏变慢,出现潮式呼吸 E.烦躁,高热,去脑强直发作
参考答案:B
___ research ___ the universe scientists have put a lot of information ___ computers. [ ]
A. With; over; at
B. On; at; to
C. In; about; into
D. For; with; through
在1.01×105Pa、150℃条件下,某烃完全燃烧,反应前后压强不发生变化,该有机物可能是[ ]
A.CH4
B.C2H6
C.C2H4
D.C2H2