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【单选题】
我国的邮政编码属于( )A.
顺序码
B.
层次码
C.
区间码
D.
自检码
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When crossing a front, isobars tend to ____.
A.
change from smooth curves within the air mass to sharp bends at the front
B.
change from sharp bends within the air mass to smooth curves at the front
C.
pass smoothly across the front with no change
D.
become closer together at the front and pass through in straight lines
【单选题】下列关于反射的叙述中,错误的是 ( )
A.
膝跳反射是一种简单的条件反射
B.
反射是人体神经调节的基本方式
C.
完成反射的神经结构基础是反射弧
D.
条件反射的形成以非条件反射为基础
【单选题】--How do you like the plan put forward by Mr.Smith? --- Considering its real _____ , it will be worth having a try.
A.
price
B.
value
C.
cost
D.
expense
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