题目内容

前后墙对冲燃烧锅炉适合于燃用无烟煤

A. 对
B. 错

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四角切圆燃烧锅炉适合于燃用烟煤或褐煤。

A. 对
B. 错

W火焰锅炉适合于燃用褐煤

A. 对
B. 错

Many people think it necessary to ______ the new law strictly.

A. endow
B. engage
C. enforce
D. endeavor

The spokesman had to _____ some tricky questions from the reporters at the press conference.

A. file
B. fill
C. field
D. filter

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