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美国民权运动中,()发表了《我有一个梦想》。
光合作用中各种能量转化的顺序是()。
燃烧的三个特征是:放热、发光、新物质生成。
Excel2000是著名的电子表格处理软件,一个工作表最多可有256列,其最小列标和最大列标分别是()
瘰疬敛口膏药功效与作用
有计划使用电话闭塞法行车时,路票输入窗口自动弹出后保持()秒时间。
土壤反应
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食品检验用样品的采集,必须注意样品的生产日期、批号、代表性和均匀性,采集样品的量能反映该食品的卫生质量和满足检验项目对样品量的需要。请问,一般一式几份?()
斑蝥内服入丸散的剂量是()
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The air reservoirs must have () fitted to prevent rupture in the event of fire.
The air reservoirs must have () fitted to prevent rupture in the event of fire.
The compressed air is supplied by () to the air reservoirs.
The compressed air is supplied by () to the air reservoirs.
Air reservoirs are designed, built and tested similarly to ().
Pump up the starting air reservoirs to their maximum pressure and ()the air rese...
Pump up the starting air reservoirs to their maximum pressure and ()the air rese...
Air reservoirs are designed, built and tested similarly to ().
Air chambers are usually fitted to reciprocating pumps in order to ().
() or air venting arrangement is fitted to the fuel supply passage.