焊剂的分类方法很多,按生产工艺可分为熔炼焊剂、粘结焊剂和()。
A. 烧结焊剂
B. 玻璃状焊剂
C. 高锰焊剂
D. 浮石状焊剂
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Radar is an example of acronym.()
The word photographically is made up of 4 morphemes.()
All words may be said to contain a root morpheme.()
A compound is the combination of only two words.()