为保证消防安全，在灌装易燃液体时，容器应留有（）的空间
A.1%
B.5%
C.10%
D.15%
参考答案：B
下列哪项是动脉粥样硬化的易患因素（）
A.年龄小于40岁
B.高脂血症
C.低血压
D.血高密度脂蛋白升高
E.女性多于男性
Tom ______the girl that he ______four years ago.[ ]
A. married, engaged
B. was married to, was engaged
C. has been married to, was engaged to
D. married with, was engaged in
