【单选题】假如面条不立即食用,可添加何种原料防止粘连
【判断题】设 A,B,C 为任意集合,则 (A × B) × C=A × ( B × C).其中 ×表示笛卡尔积
【单选题】The ___ control fuel flow to the engines.
C.
engine fuel spar valves
【单选题】设 A , B , C , D 为任意四个集合,下列命题正确是 ( ) .
A.
( B È C ) × A = B × A È C × A
B.
( A × B ) × C = A × ( B × C )
C.
( B Ç C ) × A =( B × A ) È ( C × A )
D.
A Í C 且 B Í D ,则 A × C = B × D
【简答题】请写一个程序打印出 0~100 所有的奇数。
【单选题】当51单片机允许中断1中断,则中断允许寄存器值为( )。
【单选题】He ______be lazy, but he can work hard when he feels like it.