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Bamboo is a giant grass that grows in warm places. It has many uses. Everything—from chairs and fishing rods to basket and paper can be made from it. And that’s not all. It can be eaten, too. People in China like bamboo shoots very much. They think the bamboo shoots are a delicious vegetable for parties and meals. In many parts of Asia, bamboo shoots are a favorite food. The winter shoots are the best because they are soft, with a white and green color. Usually they are boiled in water with some salt. Spring shoots are darker and harder, so they take longer to cook. But they are cheaper than winter shoots. Fresh bamboo shoots are seldom found outside bamboos’ hometown. But people in other places can buy bamboo shoots, too. These shoots are kept in bottles and cans. They need no cooking and are almost as good as fresh bamboo shoots. 小题1:Winter shoots_________. A.taste better B.have a lighter color C.take less time to cook D.all of the above 小题2:Fresh bamboo shoots are easily found in_________. A.Asia B.Europe C.America D.Australia 小题3:Bamboo shoots kept in cans_________. A.need no cooking before eating B.are sweet C.can be made into chairs and tables D.are used to make rope
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【判断题】门禁卡属于被动式电子标签。
A.
正确
B.
错误
【单选题】绝缘工具每次使用前,须认真检查有无损坏。必要时用清洁干燥的抹布擦拭有效绝缘部分后,再用( )V兆欧表分段测量
A.
2500
B.
1000
C.
100
【单选题】实际液气比q nB /q nC =( )
A.
1.3
B.
1.275
C.
1.453
D.
1.1
【单选题】绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,再用2500V兆欧表分段测量(电极宽2cm,极间距2cm)有效绝缘部分的绝缘电阻,不得低于100MΩ,或测量整个有效绝缘部分的绝缘电阻不低于()。
A.
2cm
B.
100MΩ
C.
1000mm
D.
10000MΩ
【单选题】绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,再用2500V兆欧表分段测量(电极宽2cm,极间距2cm)有效绝缘部分的绝缘电阻,不得低于( )MΩ。(1分)
A.
100
B.
500
C.
800
D.
1000
【单选题】绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,再用2500V兆欧表分段测量(电极宽2cm,极间距2cm)有效绝缘部分的绝缘电阻,不得低于( )MΩ。(1分)加油!必过!
A.
100
B.
500
C.
800
D.
1000
【单选题】绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,并用2500V兆欧表().
A.
分段测量有效绝缘部分的绝缘电阻,不得少于10000兆欧
B.
测量整个有效绝缘部分的绝缘电阻不低于2500兆欧
C.
分段测量有效绝缘部分的绝缘电阻,不得少于1000兆欧
D.
测量整个有效绝缘部分的绝缘电阻不低于10000兆欧
【单选题】绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,再用 ( )兆欧表分段测量(电极宽 2cm,极间距 2cm)有效绝缘部分的绝缘电阻,不得低于,或测量整个有效绝缘部分的绝缘电阻不低于10000MΩ。
A.
2000V 、 100MΩ
B.
2500V 、 100MΩ
C.
2800V 、 150MΩ
D.
2600V 、 160MΩ
【单选题】实际液气比 q nB /q nC =( )
A.
1.47
B.
1.57
C.
1.6
D.
1.7
【单选题】实际液气比 q nB /q nC = ( )
A.
2.85
B.
1.9
C.
2.56
D.
1.78
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