铁素体是碳溶解在（）的间隙固溶体。 ["α—Fe","w—Fe","m—Fe","k—Fe"]
水利工程供水价格由哪几部分构成？什么是两部制水价？什么是超定额用水累进加价？
在建造花坛前，要先整地，一般应深翻（），拣除草根、石头及其他杂物。 ["200～300mm","300～400mm","400～500mm","500～600mm"]
Your portable computer has two 512-MB memory modules installed in the only two memory slots available. You need to improve the speed of your computer. What should you do?（） ["A","B","C","D"]
完整的工业投资项目有可能同时涉及的内容有（）。 ["固定资产投资","无形资产投资","流动资金投资","开办费投资","资本化利息投资"]
物流成本
