在轿厢与厅门之间,装有(),当电梯关门时,如触扳碰到人或物,阻碍关门时,开关动作,使门重新开启。
A、停止装置
B、超载保护装置
c、防夹安全保护装置
D、断带保护
参考答案:C
_____ of concrete and steel, the Petronas Towers in Kuala Lampu could provide a better chance of surviving than did the World Trade Centre buildings.
A.Building
B.Built
C.To built
D.Having built
有0.5%~1.0%的星形细胞瘤可以表现为多发病灶,符合此特点的是()
A.Ⅳ级星形细胞瘤
B.Ⅲ级星形细胞瘤
C.Ⅱ级星形细胞瘤
D.星形细胞瘤
E.少突胶质细胞瘤