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【简答题】
You can buy chewing gum in nearly every country of the world. ① But it wasn’t always like that.[ The American Indians were the first people to chew gum. This gum came from a special tree that grew on their land. In 1848, a sailor called John Curtis began selling it. He was the first person to sell chewing gum. The gum he sold cost just a few cents for two pieces. It became popular very quickly even though it was very hard to chew. ② Nowadays, other things are added to the gum to make it soft and sweet. By 1890, there were hundreds of different chewing gums. The most famous name in chewing gum, however, is probably William Wrigley. He spent a lot of money in advertising and even sent free pieces of gum to children on their birthdays. ③ He also said that chewing gum helped people work better and that it stopped people from feeling tired. Although today many millions of people chew gum, not everyone thinks it is a good thing to do. Many people think it is dirty. The Singapore government does not allow people to buy chewing gum. One reason for this is that when some people have chewed all the taste out of their piece of gum, they take it out of their mouths and put it on to the backs of seats or other places. 小题1:请将①处翻译成汉语。________________________ 小题2:请根据②处内容完成下面句子。(每空一词) People make chewing gum soft and sweet _________something to it. 小题3:把③处改为直接引语。(每空一词) He also said“, Chewing gum______ people work better and it ______people from feeling tired.”
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【单选题】中国脂松香国家标准技术指标中规定特级松香的酸值大于等于 _______mg/g。
A.
160
B.
162
C.
164
D.
166
【判断题】位置控制式柴油喷射系统的压油方式是凸轮压油。
A.
正确
B.
错误
【判断题】中国脂松香国家标准技术指标中规定特级松香的软化点(环球法)大于等于 7 5 °C。
A.
正确
B.
错误
【单选题】采用同一电源三相对称阻性负载作三角形连接时消耗的功率是作星形连接时的 _______ 。
A.
B.
3倍
C.
【单选题】采用同一电源三相对称负载作三角形连接时,消耗的功率是作星形连接时的______倍。
A.
1/3
B.
3
C.
31/2
D.
(1/3)1/2
【简答题】采用同一电源三相对称负载作三角形连接时,消耗的功率是作星形连接时的______倍。
【单选题】对于公民来说,既是权利也是义务的是()。
A.
受教育
B.
办教育
C.
学教育
D.
保教育
【单选题】保持社会治安的稳定,对于治安防范()来说,既是权利,又是义务和责任。公民在要求社会治安稳定的同时,也应当承担相应的治安防范责任。
A.
主体
B.
客体
C.
公民
D.
企事业单位
【单选题】中国脂松香国家标准技术指标中规定特级松香的软化点(环球法)大于等于 _______。
A.
74℃
B.
75℃
C.
76℃
D.
77℃
【单选题】采用同一电源三相对称负载作三角形连接时,消耗的功率是作星形连接时的_____。
A.
B.
3
C.
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