史学本体论
What benefit results from implementation of Layer 3 switching versus Layer 2 switching in a fully meshed campus network？（） ["ease of IP address assignment versus use of external routers","redundancy from trunking between distribution layer switches","provides first-hop redundancy to clients","allows inter-VLAN communication without requiring complexity of routing protocol"]
某施工单位向一建筑机械厂发出要约，欲购买一台挖掘机，则下列情形中，会导致要约失效的是（）。 ["建筑机械厂及时回涵，对要约提出非实质性变更","承诺期限届满，建筑机械厂未作出承诺","建筑机械厂发出承诺后，受到撤消该要约的通知","建筑机械厂发出承诺前，收到撤回该要约的通知"]
衡量焦碳成熟度的标志是（）。 ["灰份","挥发分","抗碎强度"]
Which JSTL code snippet can be used to perform URL rewriting？（） ["<a href=’<c：url url="foo.jsp"\/>’ \/>","<a href=’<c：link url="foo.jsp"\/>’ \/>","<a href=’<c：url value="foo.jsp"\/>’ \/>","<a href=’<c：link value="foo.jsp"\/>’ \/>"]
性窒息死亡者是由于采用的缺氧措施失控，（）导致机械性窒息死亡。
