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【单选题】
BV-105表示什么电线
A.
聚氯乙烯铜芯电线
B.
聚氯乙烯铝芯电线
C.
耐105°聚氯乙烯绝缘铜芯电线
D.
耐105°聚氯乙烯绝缘铝芯电线
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【单选题】Topic sentence________________________________. One very real problem is that of traffic signs and signals. Those that are red green colour blind have trouble seeing stop signs found on shady streets ...
A.
Colour-blind people do not have so many problems as we expect.
B.
Colour-blind people have problems that we do not understand at all.
C.
Colour-blind people have problems that people who perceive colour never think about.
D.
Colour-blind people have problems that will be solved in the near future.
【判断题】食物的相生相克是指食物之间(包括各种营养素、非营养素)相互影响、相互制约的关系。()
A.
正确
B.
错误
【单选题】Because of the ______ noise of traffic I couldn’t get to sleep last night.
A.
progressive
B.
provocative
C.
perpetual
D.
prevalent
【判断题】每日推荐摄入量(recommended dietary allowance,RDA)是指营养素缺乏发生率较低的营养素摄入量。()
A.
正确
B.
错误
【判断题】非必需营养素是指人体不一定要补充、吸收的营养素。()
A.
正确
B.
错误
【判断题】营养素中的糖就是指淀粉。()
A.
正确
B.
错误
【简答题】人体必需的“第七类营养素”是指____________。
【单选题】营养素是指( )
A.
富含蛋白质,脂肪等化合物的食物都可以称为营养素
B.
人类为生存,健康而从外界摄取的所有食物中能提供热能的物质
C.
人类从食物中所能获得的无机盐,维生素等宏量和微量元素物质的总称
D.
机体为维持健康,保证生长发育和体力劳动必须从外界摄取的营养物质
E.
凡是能够增加人体能量的物质都可以称为营养素
【简答题】P assage Three After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death toll could have been much worse. More than 60 people die...
【单选题】营养素需要量是指维持正常生理功能所需要的( )
A.
营养素的数量
B.
营养素的多少
C.
营养素的摄取量
D.
营养素的含量
E.
营养素的均值
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