【单选题】Scarcity exists for those with
【判断题】用scanf函数向已定义的变量中输入数据时, 在变量名前面必须加&。
【判断题】scanf函数向已定义的变量中输入数据时,在变量名前面必须加&
【简答题】(拉压) 根据强度条件σ≤[σ]可以进行( )、( )、( )三方面的强度计算。
【单选题】Scarcity is
A.
our inability to satisfy all our wants.
B.
a situation that exists during economic recessions but not during economic booms.
C.
eliminated by choices.
D.
an economic problem only for poor people.
【多选题】下列湖北省的景区中被列入世界遗产的有( )。
【判断题】用scanf函数向已定义的变量中输入数据时,当遇非法输入时,该数据输入结束。
【单选题】Scarcity:
A.
occurs only in centrally planned economies.
B.
will likely be eliminated by technological progress.
C.
exists only in poor nations.
D.
occurs if there are insufficient resources to provide for human wants.
【多选题】下列湖北省的景区中被列入世界遗产的有( )。