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【单选题】
足月新生儿,生后1d出现表情淡漠、惹、双眼凝视等症状。查体:呼吸加快,肌张力增高,瞳孔大小不等,对光反应差。患儿可能发生的情况是A.
新生儿呼吸窘迫综合征
B.
新生儿肺炎
C.
新生儿颅内出血
D.
新生儿败血症
E.
核黄疸
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】近代量子力学的观点，核外电子运动的特征：
A.
具有波粒二象性
B.
可用ψ2表示电子在核外出现的几率
C.
原子轨道的能量呈连续变化
D.
电子运动的轨道可用ψ的图像表示
【单选题】Opportunity cost is not:
A.
a real economic cost.
B.
an implicit cost.
C.
a variable cost.
D.
none of these.
【简答题】局部择优搜索与全局择优搜索的相同处与区别各是什么?
【简答题】机会成本(opportunity cost)
【简答题】局部择优搜索与全局择优搜索的相同处与区别各是什么？
【单选题】Opportunity cost is:
A.
always incurred when you choose between various alternatives
B.
the cost of alternatives foregone
C.
the difference between marginal cost and average cost
D.
both (a) and (b) are correct
【单选题】The opportunity cost of an apartment in a rent controlled market is equal to
A.
the rent charged for the apartment.
B.
the opportunity cost of searching for the apartment.
C.
the rent charged for the apartment plus the opportunity cost of searching for the apartment.
D.
nothing because of the surplus of apartments when there are rent controls.
E.
the rent charged for the apartment minus the opportunity cost of searching for the apartment.
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