哪种定单类别的单子可以进行服务设计（） ["正常定单","存储定单","服务定单","变更定单"]
钻工在钻机开始工作前应检查（）等磨损是否超限钻杆是否弯曲，钻（杆）具是否有微小裂隙（缝），水泵的钢套、柱塞、密封圈、钢球、球座是否完好。 ["钻杆","丝口（扣）","岩芯管","螺丝头","变异接头","接箍"]
为什么密封油系统启动前要打开平衡阀差压表旁路门？
She ought to stop work;she has a headache because she（）too long. ["read","had read","is reading","has been reading"]
《最大二十家关联方关联交易情况表》计算限额指标时，授信余额可以扣除哪些内容（） ["授信时关联方提供的保证金存款","抵押的财产","质押的银行存单","质押的国债金额"]
Flash CS4导出影片文件的方法有哪些？
