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【多选题】
围岩松动的产生包括哪几个阶段:( )A.
变形阶段
B.
松动阶段
C.
坍塌阶段
D.
阶段
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反馈参考答案：
举一反三
【单选题】Diesel engines obtain combustion air through turbo chargers，blowers，or ______．
A.
Air starters
B.
Carburetors
C.
Natural aspiration
D.
Air receivers
【单选题】A hundred years ago, the we now call football did not exist. American football started during a between two colleges. The teams had got together to play what they called 'football', but each...
A.
the rules of soccer
B.
the rules of rugby
C.
different rules
D.
college rules
【简答题】一般同一类石油沥青随着牌号的增加,其针入度( )粘性( )延度( )塑形( )软化点( )温度敏感性( )使用年限( ) PS(填写增加或者下降,否则系统改卷不得分)
【单选题】When the researchers excluded seven people who were already infected when the trial started, ______.
A.
those seven people were in favor of the vaccine very much.
B.
the effect of vaccine was significant.
C.
it showed that people were less likely to be infected by taking vaccine.
D.
it showed the vaccine can reduce the risk of being infected for all the people.
【单选题】可以归并在同一个音位中的音素是()。
A.
具有互补关系、语音上又相似的音素
B.
语音上相似的音素
C.
彼此能区分词的语音形式和意义的音素
D.
具有非对立性关系的音素
【简答题】一般同一类石油沥青随着牌号的增加，其针入度()，延度()而软化点()。
【单选题】下列关于音素说法（）是正确的。
A.
处于互补关系中的几个音素，是同一个音位。
B.
处于互补关系中的几个音素，是不同的音位。
C.
具有对立关系的几个音素，是同一个音位。
D.
具有对立关系的几个音素，是同一个音位的变体。
【单选题】SLEW:
A.
inappropriate understanding
B.
insecure resource
C.
unwelcome intrusion
D.
humble start
E.
restricted number
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