若船舶装载后GM减小,则意味着()。
A.KG减小
B.KG增大
C.KG不变
D.以上均有可能
参考答案:D
—What did the teacher say just now?
—He asked us to come to school _____.
A. on time
B. at time
C. on the time
D. in the time
根据工业用地在城市中的布置,属于按环境污染分类的是()
A.一般工业
B.冶金工业
C.建材工业
D.化工工业