题目内容

A．bothB．equallyC．ratherD．together

A. both
B. equally
C. rather
D. together

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某氨吸收式制冷装置，氨水重950kg，其中水重400kg，则水的质量浓度为()。

A. 0.421
B. 0.428
C. 0.456
D. 0.468

A．ofB．byC．atD．on

A. of
B. by
C. at
D. on

A．goodB．favoriteC．favorableD．satisfying

A. good
B. favorite
C. favorable
D. satisfying

A．onB．fromC．aboutD．of

A. on
B. from
C. about
D. of