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【判断题】
逻辑函数化简后的结果是唯一的。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】Tourists become perplexed because they dont know street names are posted on the side of buildings, rather than on signs. The underlined part means______.
A.
confused
B.
explicit
C.
positive
D.
rational
【判断题】低压开关一般为非自动切换电器,常用的主要类型有刀开关、组合开关和低压断路器。
A.
正确
B.
错误
【简答题】目前常用的转换开关类型有万能组合开关和 。
【单选题】Tourists have had bad experiences on ecotour holidays.
A.
YES
B.
NO
C.
NOT GIVEN
【多选题】What do the operators need to know before reserving tables for tourists?
A.
number of tourists
B.
marital status
C.
D.
nationality
E.
diet taboos
【简答题】We didn’t know where it was ________ the other tourists in our group stayed for the night until the tsunami was over. A.that B.which C.when D.why 
【简答题】目前常用的转换开关类型主要有万能组合开关和()。
【单选题】常用的转换开关类型主要有万能转换开关和( )两大类。
A.
组合开关
B.
按钮
C.
电磁开关
D.
刀开关
【单选题】______ I know, many thousands of tourists from the Mainland have been to Taiwan. [     ]
A.
As soon as
B.
As well as
C.
As much as
D.
As far as
【单选题】低压开关一般为非自动切换电器,常用的主要类型有刀开关、组合开关和()
A.
低压断路器
B.
熔断器
C.
主令电器
D.
继电器
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