【简答题】复数 1-2i 3+4i 在复平面上对应的点位于第______象限.
【单选题】HRB335级、HRB400级受力钢筋在末端做135。的弯钩时,其弯弧内直径至少是钢筋直径的( )。
【单选题】复数z= i 1+i 在复平面上对应的点位于第( )象限.
【简答题】(本小题12分) 设复数 ( 是虚数单位), 试确定实数 ,使得: (1) 是纯虚数; (2) 是实数; (3 ) 对应的点位于复平面的第二象限.
【单选题】HRB335级、HRB400级受力钢筋在末端做135°的弯钩时,其弯弧内直径至少是钢筋直径的( )。
【简答题】(英语类学生必做)As the fatalities continue to occur daily in every state, some Americans are even beginning to think well of the 13 years of national prohibition of alcohol that began in 1919, which Presiden...
【单选题】HRB335级、HRB400级受力钢筋在末端做135°的弯钩时,其弯孤内直径至少是钢筋直径的( )。
【简答题】设复数 ,试求 m 取何值时 (1) Z 是实数; (2) Z 是纯虚数; (3) Z 对应的点位于复平面的第一象限
【判断题】Right linearity grammar à Transition Graph: Step 1:Add state t as final state (assume t Ï (V T ∪ V N ) Step 2:Every nonterminals are made to states Step 3: (1) Form as A ® aB production, transition fr...