弹簧打捞筒是用以打捞()的自由落物。
A.杆类
B.带接箍和其他具有不同形状台阶
C.管类
D.小件
参考答案:B
—I often see him working hard in his spare time.
—________he has won the scholarship from time to time.
A.No wonder
B.No doubt
C.No way
D.No problem
政府引导模式可分为( )。
A.完全介入引导
B.调控型引导
C.消极引导
D.积极引导
E.需求引导