Somehow, the old man had ________ a dangerous secret, one which could not be discussed in a room on a military base.

A．put out

B．let out

C．set out

D．cut out

群体激励薪酬计划的主要形式包括（）

A.利润分享计划

B.收益分享计划

C.班组奖励计划

D.斯坎伦计划