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As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A. exposure B. distribution C. expansion D. emission
查看习题详情和答案>>As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A. exposure B. distribution C. expansion D. emission
查看习题详情和答案>>As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A. exposure B. distribution C. expansion D. emission
查看习题详情和答案>>As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A. exposure B. distribution C. expansion D. emission
查看习题详情和答案>>As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
|
A．exposure |
B．distribution |
C．expansion |
D．emission |
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