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【单选题】
如图所示的元件为改善润滑性能，一般用什么制成（ ）。A.
含铜较多的铸铁或粉末
B.
含铝合金较多的铸铁或粉末
C.
含石墨较多的铸铁或粉末
D.
含机油较多的铸铁或粉末
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举一反三
【单选题】根据下列文章,请回答 41～45 题。London's First Light Rail System The Docklands Light Railway (DLR) took just three years to build at a cost of 77 million, It is London's first Light Rail System, but its route foll...
A.
was constructed in the nineteenth century.
B.
will be finished in three years' time.
C.
follows some of the original lines.
D.
took three years longer than expected to complete.
【单选题】London’s First Light Rail System The Docklands Light Railway (DLR) took just three years to build at a cost of £77 million. It is London’s first Light Rail System, but its route follows that of a numb...
A.
was constructed in the nineteenth century.
B.
will be finished in three years’ time.
C.
follows some of the original lines.
D.
took three years longer than expected to complete.
【简答题】由于有价证券是虚拟资本，所以它的价格总额总是等于实际资本额。( )
【简答题】On 1 August 2020 Patronic purchased 18 million of a total of 24 million equity shares in Sardonic.Both companies have shares with a par value of $1 each. The market price of Patronic and Sardonic's sh...
【单选题】——_____________ does she weigh? ——Her ______________ is 50kg.
A.
How heavy; weigh
B.
How many; weight
C.
How much; weight
D.
How much; weigh
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