题目内容

必需脂肪酸最好的食物来源是以下的

A. 大豆油
B. 奶油
C. 椰子油
D. 棕桐油
E. 牛油

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与食品等有关安全评价内容相比，化妆品安全评价内容中有一特点就是开展

A. 急慢性经口毒性试验
B. 致突变、致癌短期生物筛选试验
C. 经皮肤粘膜染毒引起的局部和全身的急、慢性毒性试验
D. 致癌试验
E. 致畸试验

The professor ______ to America and he will give us a talk after he comes back.

A. has gone
B. has been
C. went
D. was going

The little boy ______, so I swam out to save him.

A. was asking for trouble
B. was in trouble
C. was for trouble
D. was taking the trouble

法约尔认为工人的主要能力是( )

A. 分析能力
B. 管理能力
C. 控制能力
D. 技术能力