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【简答题】
已知等比数列{a n }中,a 1 +a n =66,a 2 ·a n-1 =128,S n =126,求项数n和公比q的值。
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A.
正确
B.
错误
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【判断题】车道荷载和车辆荷载可以叠加考虑
A.
正确
B.
错误
【单选题】识图题:此项目中的绝对标高是多少?
A.
±0.000
B.
-0.150
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