车辆齿轮油应具有优良的极压抗磨性、氧化安定性、防锈性、防腐蚀性和剪切安定性。（）
参考答案：对
The population of the country is 3 million, _____ Kooris.
A．1 % of which were made up of
B．1 % of it were Kooris
C．and 1 % of which were made up of
D．1 % of them were
养分对动物约有四项要功能，其中（）是附加功能.
A.作为建造和维持动物体的构成物质
B.作为产热、役用和脂肪沉淀的能量来源
C.调节动物机体的生命过程或动物产品的形成
D.乳的生产
