下列文物在长江流域出土的是( )。A.太阳神鸟金箔B.甲骨文C.秦陵兵马俑D.莲鹤 发布时间:2018-01-01 15:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列文物在长江流域出土的是( )。A.太阳神鸟金箔B.甲骨文C.秦陵兵马俑D.莲鹤方壶
题型:单项选择题 大学生李萌同学利用暑假参加社会实践,为某报社推销报纸,订购价格是每份0.7元,销售价是每份1元,卖不掉的报纸由报社发行部以每份0.2元回收,在一个月内(以31天计算)约有20天每天可卖出100份,其余11天每天可卖出60份,但报社发行部要求每天订购的报纸份数必须相同,若每天订购x份为自变量,该月所获得的利润y(元)为x的函数.(1)写出y与x的函数关系式,并指出x自变量的取值范围。(2)李萌同学应该每天订购多少份该报纸,才能使该月获得的利润最大?并求出这个最大值。 查看答案
题型:单项选择题 In (66) the strength of the carrier signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to al name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.A.VLANB.LANEC.VPND.IPOA 查看答案