【单选题】Mr. Zoellick is trying to establish a good relationship with Mr. Erwin because ______.
A.
Mr. Erwin is organizing a group of, poor and middle-income countries to oppose America.
B.
Mr. Erwin is a very talented and tactful diplomat in the world political circle
C.
Mr. Erwin's possible position in the coming future will be helpful to American interests
D.
Mr. Erwin's relationship with Japanese and European leaders is useful to the U.S.
【多选题】月末,发现企业银行存款日记与银行对账单不一致,造成企业账面存款余额小于银行对账单存款余额的原因有( )。
【判断题】只有真核生物的RNA聚合酶是具有蟹爪结构的。
【单选题】已知直线m、l和平面α、β,则α⊥β的充分条件是
【单选题】在 Windows XP 中,在“任务栏”内无法实现的操作实( )。
【简答题】已知:l α ,m α ,l∥m 求证:l∥ α
【单选题】在Windows XP中,在“任务栏”内无法实现的操作是( )。
【单选题】设信号,其中,。若被均匀量化为40个电平,则量化间隔等于( )