盖天说大约出现于（）。 ["元朝","东汉","殷周"]
骨料加工厂的位置应尽可能接近拌和楼。
喷灌的主要灌水质量指标有哪几个，如何定义？
试讨论金属晶体缺陷对其固态相变形核过程的影响。
Which Cisco product is a software component that blocks unwanted connections and provides other gateway security functions for small business?（） ["Cisco Firewall Services Module (FWSM)","Cisco Secure Access Control Server (ACS)","Cisco Private Internet Exchange (PIX) Firewall","Cisco Internetwork Operating System (IOS) Firewall"]
情感是在人的（）中产生的。
