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【判断题】
DNA是遗传物质, 而RNA不是。A.
正确
B.
错误
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举一反三
【单选题】The Yerkes-Dodson law demonstrates that
A.
the level of arousal becomes too low, our performance will inrease.
B.
the level of arousal becomes too high, our performance will increase.
C.
the level of arousal is moderate, our performance will be best.
【单选题】The Yerkes-Dodson law demonstrates that
A.
the level of arousal becomes too high, our performance will decrease.
B.
the level of arousal becomes too high, our performance will increase.
C.
the level of arousal becomes too high, our performance may increase or decrease.
【单选题】质量管理是指企业为了保证最经济地生产出满足用户要求的产品而形成并运用( )。
A.
一套完整的设计手段
B.
一套完整的加工工艺
C.
一套完整的质量活动、制度、手段和方法
D.
一套检测方法
【多选题】双代号网络图的绘制规则说法正确的是( )
A.
网络图中，不允许出现编号相同的节点或工作。
B.
网络图中，允许出现编号相同的节点或工作。
C.
箭线应以水平线为主，竖线和斜线为辅，不应画成曲线。箭线宜保持自左向右的方向，不宜出现箭头指向左方的水平箭线或箭头偏向左方的斜向箭线。
D.
正确应用虚箭线，力求减少不必要的虚箭线。
【单选题】It is widely______ that smoking can cause cancer. A. believed B. think C. say D. hoped
A.
1
B.
2
C.
3
D.
4
【单选题】The Yerkes-Dodson law demonstrates that
A.
the level of arousal becomes too low, our performance will increase.
B.
the level of arousal becomes too low, our performance will decrease
C.
the level of arousal becomes too low, our performance will be best.
【简答题】简述耶基斯一多得森(Yerkes-Dodson)法则。
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