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问题 问答题

如何控制食用油脂在烹调过程中出现对人体有害的热聚合物和过氧化物

答案

参考答案：在食用或煎炸食品时，应尽量避免油温过高，一般控制在170～200℃就不会出现对机体有害的热聚合物和过氧化物。同时，煎炸用油应不断更新，不断增加新油，不要陈油反复使用。

单项选择题

The network layer provides services to the transport layer．It can be based on either (71) ．In both cases，its main job is (72) packets from the source to the destination．

In network layer，subnets can easily become congested，increasing the delay and (73) .

for packets．Network designers attempt to avoid congestion by proper design．Techniques include (74) policy，caching，flowcontrol，and more．

The next step beyond just dealing with congestion is to actually try to achieve a promised quality of service．The methods that can be used for this include buffering at the client，traffic shaping，resource (75) ，and admission control．Approaches that have been designed for good quality of service include integrated services(including RSVP) ，differentiated services， and MPLS．

（75）处填（）。

A．distribution

B．guarantee

C．scheme

D．reservation
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选择题

“误矣，人只知以利对害，便只管要寻利去，人人寻利，其间多少事！‘利’字，只当以‘义’字对。”因详言义利之辩。(［宋］罗大经《鹤林玉露》)这反映了当时

A．教化民风成为官员主要职责

B．商品经济发展影响世人观念

C．逐利避害成为社会行为准则

D．程朱理学已经成为官方哲学
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