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【单选题】
---After the big exams, we can finally have a good relax. ---How I ___ a chance to have a trip! I can ’ t wait.A.
am worried about
B.
am thirsty for
C.
am good at
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【单选题】There are ________ to coal and petroleum, but water cannot be replaced.
A.
conflicts
B.
alternatives
C.
source
D.
distribution
【单选题】There are ____ to coal and petroleum, but water cannot be replaced.
A.
alternatives
B.
replaced
C.
enabling
D.
fracturing
【单选题】Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasing rate. The supply of these【B1】is limited and electric power is very【B2】...
A.
materials
B.
metals
C.
reserves
D.
fuels
【判断题】Because their properties differ greatly, petroleum asphalt should not be confused with coal tar. ( )
A.
正确
B.
错误
【单选题】Fossil fuel contains ① coal; ② Petroleum; ③ Natural gas; ④ Combustible ice.
A.
① , ② ；
B.
② , ④ ；
C.
①, ②, ③, ④.
D.
--
【简答题】Biomass is the only new energy that can replace fuel on a large scale. (coal / petroleum)
【单选题】Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasing rate. The supply of these【C1】______is limited and electric power is ve...
A.
materials
B.
metals
C.
reserves
D.
fuels
【单选题】某基础埋深5m,下列关于基底附加应力说法正确的是()
A.
基底附加应力大于基底压力
B.
基底附加应力等于基底压力
C.
基底附加应力小于基底压力
D.
基底附加应力与基底压力无关
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