大额资金汇划必须严格坚持分级授权制度,办事处、市联社要根据当地资金活动的实际情况,按照()的原则,确定合理的授权额度。
A.及时
B.安全
C.准确
D.灵活
参考答案:B, D
根据上面这则广告的内容,完成短文。
This is advertisement invites you to visit _______. You can _______are for seven days. But you only
need to pay for _______ days. You can visit therefore seven days. But you only need to pay for_______ days.
You can visit sney Theme Parks, Water Parks and more with a Theme Park ticket. You will have to pay more
_______ 30 October 2008. So book tickets now to_______.
砾磨机是用()作介质的磨矿设备。
A、砾石
B、卵石
C、磨矿
D、岩石