汽车吊车在长臂杆大幅度条件下起重量是由()决定的。
A.吊车整体倾覆力矩(整体稳定性)
B.整体强度
C.吊车站立位置
D.指挥得当
参考答案:A
办一次聚会准备邀请130个客人,预计平均每3个客人要花100块钱,则至少要有多少经费()
A.4 000
B.4 230
C.4 300
D.4 400
They had _______ wonderful train ride to Chengdu before they went on to _______ Mount Emei by bus.
A.a; the
B./; the
C.a; /
D.the; a