No one can stop us from going there, ______?
A.can’t it
B.can they
C.can’t they
D.can one
答案:B
投资者购买了某只股票,其连续5天的收盘价分别为:7.25元,7.29元,7.36元,7.26元,7.27元。该股票这5天的样本方差为()。
A.0.00772
B.0.006176
C.0.00193
D.0.001544
糖尿病酮症酸中毒患者,小剂量胰岛素静脉滴注最常见的优点是无()
A.脑水肿
B.低血钠
C.低血脂
D.低血钙
E.低血钾