义齿基托的线性收缩率为()
A.0.1%
B.0.2%
C.0.3%
D.0.5%
E.0.2%~0.5%
参考答案:E
Since 1994, the glacier in Antarctica has lowered by as much as 90cm, _____ sea level to rise. [ ]
A. having caused
B. causing
C. caused
D. being caused
关于喉痉挛描述,下列说法中不正确的是()。
A.多见于婴幼儿
B.常在白天期间突然出现吸气性呼吸困难
C.发作时间短暂
D.喉镜检查一般无异常
E.入睡后症状消失