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[判断题]
根据Q/GDW1396-2012规定,GOOSE出口软压板使用SPC类型建模,其控制采用“sbo-with-enhancedsecurity”方式()
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下面的文法G(S)描述由命题变量p、q,联结词U(合取)U(析取)←(否定)构成的命题公式集合:
A、正确
B、错误
答案:A
闸阀的代号是()。
格式:A、Q
B、J
C、G
D、Z
设S=(a,b,c},对于S中每一串符号s和S*中每一串ω,定义N,(ω)=ω中s出现的次数,给出转换赋值机M=(Q,S,R,f,g,q1)的状态图,对于输入串ω,它的最终输出是求激励是abbcbaabc的响应。
小麦的生产函数为q=100K0.8L0.2。
(1)开始时资本投入为4单位,劳动投入为49单位,请证明劳动和资本的边际产量都下降。
(2)该生产函数显示的规模报酬是递增、递减,还是不变?
In Example 6.3,wheat is produced according to the production function g= 100(K0.8L0.2).
a. Beginning with a capital input of4 and a labor input of 49,show that the marginal product of labor and the marginal product of capital are both decreasing.
b. Does this production function exhibit increasing, decreasing, or constant returns to scale?