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【单选题】
What does Thomas think of the production speed of the factory?A.
It's not very impressive
B.
It gives the factory an advantage over its competitors
C.
It has no difference with that of other producers
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【单选题】安装在三元催化转化器下游的加热型氧传感器是主要用于监视( )。(II)
A.
三元催化转化器转化效率
B.
三元催化转化器上游氧传感器的工作效率
C.
三元催化转化器温度
【简答题】In the text, ________is compared to a road map.
【单选题】The volunteers must have broadened the road yesterday, _______?
A.
mustn’t they
B.
haven’t they
C.
didn’t they
D.
weren’t they
【单选题】Sometimes they couldn‘t see the road because it was windy. 查看材料
A.
Right
B.
Wrong
C.
mentioned
【单选题】Compared with road transport, the advantages of rail transport do not include:
A.
benefits to the environment
B.
less expensive
C.
quicker and more practical journeys
D.
better service
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