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【简答题】
萝卜中具有较多的胡萝卜素,它是人体的主要营养元素之一,α胡萝卜素的结构为: (1)写出α胡萝卜素的分子式:______. (2)1mol胡萝卜素最多能与______mol Br 2 反应. (3)β胡萝卜素与α胡萝卜素互为同分异构体,且只是虚线框内部分不同,碳的骨架相同,写出β胡萝卜素方框内可能的结构:______.
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【简答题】阅读理解。 No. Middle School is our school. It isn't big. There are eigh classes and sixty-two teachers in our school. It's outside (在……外面) our city,not far from a park. The park is between a farm (...
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【单选题】通过人体电流的持续时间越长,能量积累越大,人体电阻下降,容易引起心室颤动,危险性就越大,其主要原因有
A.
能量的积累
B.
人体电阻降低
C.
与易损期重合的可能性增大
D.
以上都对
查看完整题目与答案
【单选题】What did the man give the woman?
A.
His address.
B.
His recommendation.
C.
His business card.
D.
A hotel's number.
查看完整题目与答案
【判断题】收款凭证又可以分为现金收款凭证和银行存款收款凭证,如以现金结算的发票联属于现金收款凭证。
A.
正确
B.
错误
查看完整题目与答案
【单选题】He notofoed his friends that his address had changeD.
A.
informed
B.
observed
C.
mocked
D.
misled
查看完整题目与答案
【单选题】There are numerous situations where better planning and awareness could really make a difference in energy savings and dollars.
A.
意识到节省能源和能源开支的重要性,在通常情况下对改进计划起着一定作用。
B.
在许多情况下,改进计划、增强意识对节省能源和能源开支非常重要。
C.
改进能源计划、增强能源意识,应该根据各种不同情况区分对待。
D.
各种不同的情况决定了能源计划和能源意识将带来的不同后果。
查看完整题目与答案
【单选题】通过人体电流的持续时间越长,能量积累越大,人体电阻下降,容易引起心室颤动,危险性就越大,其主要原因有
A.
能量的积累
B.
人体电阻降低
C.
与易损期重合的可能性增大
D.
其余选项都正确
查看完整题目与答案
【判断题】收款凭证又可以分为现金收款凭证和银行存款收款凭证。
A.
正确
B.
错误
查看完整题目与答案
【简答题】___his address,I can’t send this book to him.
查看完整题目与答案
【简答题】What did the man give the woman? [A] His address. [B] His recommendation. [C] His business card. [D] A hotel's number.
查看完整题目与答案
相关题目:
【简答题】阅读理解。 No. Middle School is our school. It isn't big. There are eigh classes and sixty-two teachers in our school. It's outside (在……外面) our city,not far from a park. The park is between a farm (...
查看完整题目与答案
【单选题】通过人体电流的持续时间越长,能量积累越大,人体电阻下降,容易引起心室颤动,危险性就越大,其主要原因有
A.
能量的积累
B.
人体电阻降低
C.
与易损期重合的可能性增大
D.
以上都对
查看完整题目与答案
【单选题】What did the man give the woman?
A.
His address.
B.
His recommendation.
C.
His business card.
D.
A hotel's number.
查看完整题目与答案
【判断题】收款凭证又可以分为现金收款凭证和银行存款收款凭证,如以现金结算的发票联属于现金收款凭证。
A.
正确
B.
错误
查看完整题目与答案
【单选题】He notofoed his friends that his address had changeD.
A.
informed
B.
observed
C.
mocked
D.
misled
查看完整题目与答案
【单选题】There are numerous situations where better planning and awareness could really make a difference in energy savings and dollars.
A.
意识到节省能源和能源开支的重要性,在通常情况下对改进计划起着一定作用。
B.
在许多情况下,改进计划、增强意识对节省能源和能源开支非常重要。
C.
改进能源计划、增强能源意识,应该根据各种不同情况区分对待。
D.
各种不同的情况决定了能源计划和能源意识将带来的不同后果。
查看完整题目与答案
【单选题】通过人体电流的持续时间越长,能量积累越大,人体电阻下降,容易引起心室颤动,危险性就越大,其主要原因有
A.
能量的积累
B.
人体电阻降低
C.
与易损期重合的可能性增大
D.
其余选项都正确
查看完整题目与答案
【判断题】收款凭证又可以分为现金收款凭证和银行存款收款凭证。
A.
正确
B.
错误
查看完整题目与答案
【简答题】___his address,I can’t send this book to him.
查看完整题目与答案
【简答题】What did the man give the woman? [A] His address. [B] His recommendation. [C] His business card. [D] A hotel's number.
查看完整题目与答案
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