烧结生产熔剂粒度,小于3mm部分的百分比应大于()。
参考答案:88%
The camera is a souvenir(纪念品)___________ by my uncle for me when he went to Japan. I do like it.
A.to buy
B.to be bought
C.bought
D.buying
“兼听则明,偏信则暗”这句格言出自_______
A.《论语》
B.《苟子》
C.《史记》
D.《资治通鉴》