下列哪项不是洋地黄中毒的临床表现（）
A.视力模糊
B.恶心、呕吐
C.窦性心动过速
D.室性心动过速
E.黄视
参考答案：C
(2013·湖北高考)Don't defend him any more.It's obvious that he ________ destroyed the fence of the garden even without apology.
A．accidentally
B．carelessly
C．deliberately
D．clumsily
综合安全技术
氧气站区外围应设置高度不低于( )的围墙或栅栏。
A．1m
B．2m
C．3m
D．4m
