适用于具备一定技术开发能力的企业的新产品开发方式是()。A．自行研制开发  B．引进

So far nobody has claimed the money________in the library.     [ ]

A. discovered              

B. to be discovered    

C. discovering              

D. having discovered

After studying in a medical college for five years, Jane _____ her job as a doctor in the countryside. [ ]

A. set out

B. took over

C. took up

D. set up

ST型缓冲器箱体六方口部裂纹长度小于30mm、内六方面磨耗小于（）时焊修后磨平。

A、2mm

B、3mm

C、4mm

D、5mm

引起胆囊收缩、Oddi括约肌舒张的最重要的物质是

A．胃泌素

B．胆囊收缩素

C．促胰液素

D．盐酸

上海市速录师职业标准对速录师要求，对文本信息采集的文字录入速度，最低不能低于180字/分。( )