腹股沟管的外环是指
A.联合肌腱下方的薄弱部分
B.腹横筋膜的卵圆形裂隙
C.腹外斜肌腱膜的三角形裂隙
D.腹膜的卵圆形裂隙
E.腹内斜肌的卵圆形裂隙
参考答案:C
He got up________ catch the bus.[ ]
A. in order that
B. in order to
C. so that
D. such that
塔机作业“十不吊”是指哪些?(答出五项即为合格)