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【单选题】
某直线的V投影积聚为一点,该直线为A.
侧垂线
B.
铅垂线
C.
正垂线
D.
正平线
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【单选题】Which group includes the four most abundant elements in living organisms?
A.
carbon, hydrogen, oxygen, iron
B.
carbon, hydrogen, nitrogen, oxygen
C.
carbon, hydrogen, phosphorous, oxygen
D.
carbon, nitrogen, phosphorous, oxygen
E.
carbon, hydrogen, sulfur, oxygen
【简答题】The way in which people use social space reflects their social relationships and their ethnic identity. Early immigrants to America from Europe brought with them a collective style of living, which th...
【简答题】This group ______ nearly 18 percent of the state's population, are living in a remote area, which few people know about. [ ] A . accounting for B. accounted for C . be accounted for D. being ...
【简答题】The way in which people use social space reflects their social relationships and their ethnic identity. Early immigrants to America from Europe brought with them a collective style of living, which th...
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