【单选题】在图示梁上作用一力偶,其力偶矩为Me。则支座A、B的约束力满足条件()。
【单选题】中国古代文化中的“仁”的中心思想是( )。
【单选题】【2012-37】某技术方案的净现金流量如下表。则该方案的静态投资回收期为( )年。 计算期(年) 0 1 2 3 4 5 6 净现金流量(万元) - -1500 400 400 400 400 400
【单选题】传统信息资源检索技术中常用的布尔逻辑运算符中不包括()。
【判断题】自由空间中,若收发两点间的距离增加一倍,则电波的传播损耗6dB。
【单选题】It seems that manufacturers will remain reluctant to make improvements unless______.
A.
they can do so at a very low cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complains about their machines
【单选题】'인백지기천지(人百之己千之)'라는 말이 있다. 이 말은 '다른 사람들이 백을 노력할 때 자신은 천을 노력한다'는 뜻으로 신라시대 유명한 작가가 남긴 말이다. 그 작가의 이름은?
【单选题】— How do the shops make money if they sell at such low prices? — Manufacturers, it seems, are willing to bring down prices ________ big volume purchases. [ ]
【单选题】It seems that manufacturers will remain reluctant to make improvements unless______.
A.
they can do so at a very low cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complaints about their machines