车辆检修限度分为运用限度和定检限度。（）
参考答案：对
Jack is good at sports and he wants to be _______ athlete in the future.[ ]
A. /
B. the
C. a
D. an
钢管扣件脚手架搭设高（）步以上时随施工进度，逐步加设剪刀撑。
A.7
B.8
C.9
D.10
