Two numbers are reciprocalsif their product is equal to 1. If xand yare reciprocals and x&Two numbers are reciprocalsif their product is equal to 1. If xand yare reciprocals and x>1, then y must be:
A. less than -1.
B. between 0 and -1.
C. equal to 0.
D. between 0 and 1.
E. greater than 1.
The edges of a cube are each 3 inches long. What is the surface area, in square inches, of
A. 9
B. 18
C. 27
D. 36
E. 54
事业单位工作人员考核的内容包括德、能、勤、绩、廉五个方面,其中,重点考核()。
A. 德
B. 能
C. 勤
D. 绩
赵甲与邻村周某因耕地引水发生争斗,并将周某打成轻微伤,当时打斗现场还有其他三人在场,其中包括赵甲刚满12周岁的儿子赵乙。周某遂将赵甲诉至法院,庭审中赵甲申请其儿子赵乙出庭作证。据此,下列说法正确的是()。
A. 赵乙与赵甲系父子关系,不能作为证人出庭作证,应当回避
B. 赵乙可以成为本案证人,但其证言不能单独作为认定案件事实的依据
C. 赵乙系未成年人,不能作为证人出庭作证
D. 赵乙与赵甲有直接利害关系,其证言应不予采信