【单选题】只规定某些一般的方针和行动原则,给予行动者以较大行动处置权的计划属于()。A.程序性计划B.非程序
A.
只规定某些一般的方针和行动原则,给予行动者以较大行动处置权的计划属于( )。 A.程序性计划
【单选题】●Suppose we have the relation schema R(A,B,C,D)with functional dependencies;F{A→B,B→C,C→D,D→A},then R(A,B,C, D.at least is in (73) . (73)
【单选题】Suppose we have the relation schema R(A,B,C,D)with functional dependenciesF{A→B,B→C,C→D,D→A},then R(A,B,C,D)at least is in
【单选题】Suppose V1=<R,+>,V2=<R, .>,where R is the set of real numbers, +and . are respectively addition and multiplication. Let f: R→R and {(x) = 10x, which of the following propositions is true? ( )
A.
f is an injective homomorphism from V1 to V2
B.
f is a surjective homomorphism from V1 to V2
C.
f is an isomorphism from V1 to V2
【单选题】根据江苏省“十三五”规划,未来五年将实现快速铁路网覆盖80%左右县级以上城市,形成“2小时江苏”快速交通圈。这体现了政府在履行