题目内容

The tariff rates for importers fall into two categories:general tariff rates and minimum tariff rates.The general tariff rates apply to the imports originating in the countries with which the People’S Republic of China has not concluded trade treaties or agreements with reciprocal favourable tariff clauses therein;the minimum tariffrates apply to imports originating in the countries with the People’S Republic of China has concluded trade treaties or agreements with reciprocal favourable tariff clauses therein.

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使用瞳距仪测量近用瞳距时,应先将注视距离旋钮调整到30cm(或其它近用距离)标记,再根据()位置确定数据。

A. 瞳孔反光点
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A. 中心像
B. 边缘像
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磁石常用量按照2010年版《中华人民共和国药典》规定是

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B. 9~30G
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D. 0.3~1G
E. 0.03~0.6G

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