根据《中华人民共和国政府采购法》，()应作为政府采购的主要方式。
A
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Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
设f(x,y)在点(0,0)附近有定义,且,则
WeweretoldthatSuewouldbeidealforthejob,butshe________badlywhenwetalkedtoher.
曲线的渐近线条数()
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.