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【单选题】
下列对于响应式导航条描述错误的是?A.
响应式导航条在移动设备上默认竖向全部展开
B.
响应式导航条依赖折叠（collapse）插件
C.
响应式导航条在移动设备上可以折叠（并且可开可关）
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反馈参考答案：
举一反三
【单选题】Decide whether the following is primary data or secondary data. Data from a government publication on the toy industry used by a new toy shop to determine which items to stock.
A.
Primary data
B.
Secondary data
【单选题】血糖正常值为(以mg/d1或mmol/L计) ( )
A.
70~110或3.89~6.11
B.
80~140或4.52~7.78
C.
60~70或3.33~3.89
D.
130~140或7.22~7.78
E.
99~112或5.52~6.23
【单选题】Decide whether the following is primary data or secondary data. Results of an election opinion poll published in a newspaper
A.
Primary data
B.
Secondary data
【单选题】Decide whether the following is primary data or secondary data. Information from clock cards when used for making up wages.
A.
Primary data
B.
Secondary data
【简答题】广告有 、 两种类型。
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