掺入碳酸钾的水泥从搅拌运输一直到用完为止,时间不得超过______min。
A.30
B.25
C.20
D.15
参考答案:A
Rasmus Company purchased equipment for $96000. The estimated useful life is three years, and it is expected to have a salvage value of $ 24000 at the end of its useful life. The depreciation in the third year was $12000. What method of depreciation did Rasmus most likely use()
A. Sum-of-years digits
B. Straight Line
C. Double-declining balance.
马太效应,指社会对已经出名(得到社会承认)的人才,给予愈来愈多,而对不出名的人才,则连应该给予的也不给予的现象。 下列不属于马太效应的是:( )
A.社会对已经成名的科学家,不断地加给他们各种头衔、名誉和各种优厚待遇
B.某科学院院士成名后仍刻苦求进,不断攻克科学难题,获得很大成功
C.许多科学家没有成名以前,论文无处发表、成果无人承认,甚至生活无所着落
D.当一个知名教授与一个学生争执不下时,人们总是相信教授是对的