CPI=0.90的说明是（）。

A.目前的预期成本超出计划的90%

B.投入一元钱产生0.90元的效果

C.项目完成的时候，将超支90%

D.项目已经完成计划的90%

What shall be conducted during a fire and boat drill?（）

A.All watertight doors which are in use while the vessel is underway shall be operated

B.All lifeboat equipment shall be examined

C.Fire pumps shall be started and all exterior outlets opened

D.All of the above