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【单选题】

根据以下内容,回答下列各题。 The Esky, a great Australian invention--it's about as important to the Australian household as a BBQ( 吃烧烤的野餐). How else would.we move our carefully prepared food and drink around without having it spoilt.Though it is a regular problem with Esky, you also need to plan. If you haven' t had a freeze pack, then you' 11 need to go out and buy a bag of ice (maybe even several bags of ice). Get a Portable Mini Fridge and you' 11 save on the bags of ice as well as a good deal on cleaning time. The Portable Mini Fridge requires a 12V DC supply, and you' 11 find this thermo electric cooler the best thing invented since sliced bread (near enough anyway). One thing this car fridge has over your average Esky--it'll warm to 60--65℃... and it does all this with-out any environmental pollution. Apart from basic cleaning, this thermo electric warmer is largely non-wearing and maintenance-free. At last, an affordable mini fridge for your car or boat will help save those green vegetables or fruits better, also it will keep the shape of an ice cream, this may help you feel very happy. What is Esky from the context?

A.
a kind of food.
B.
a case to preserve cold drinks or food.
C.
electronic sky.
D.
a refrigerator.


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【多选题】根据材质不同换热器可分为()

A.
针式换热器
B.
太空材料换热器
C.
粘土换热器
D.
金属换热器

【单选题】根据形成苷键的原子分类,属于S-苷的是

A.
山慈菇苷
B.
萝卜苷
C.
巴豆苷
D.
天麻苷
E.
毛莨苷

【单选题】国际仲裁的法律根据是______

A.
仲裁法庭组织约章
B.
和平解决争端公约
C.
国际仲裁示范规则
D.
当事国间的仲裁协定

【多选题】根据我国《合同法》的规定,在( )情形下,要约失效。

A.
拒绝邀约的通知到达要约人。
B.
要约人依法撤销要约。
C.
承诺期限届满,受要约人未作出承诺。
D.
受要约人对要约的内容作出实质性变更
E.
要约人依法撤回要约