如果区位内上市公司的主营业务符合当地政府的产业政策,一般会获得诸多政策支持,对上市公司的进一步发展有利。( )
参考答案:对
We forgot to bring chopsticks, so we must find something _____ eating our meal. At last we had to use
several branches _____ chopsticks. [ ]
A. for; as
B. for; to
C. as; for
D. as:as
两种流体的对流传热膜系数分别为αl和α2,当α1《α2时,欲提高传热系数,关键在于提高()的值才有明显的效果。
A、αl
B、α2
C、αl和α2
D、与两者无关