钢筋应按批进行检查和验收,每批不大于60t,应由()的钢筋组成。
A.同一牌号
B.同一炉罐号
C.同一规格
D.同一交货状态
参考答案:A, B, C, D
An analyst does research about common probability distributions. Compared to a normal distribution, a return distribution with negative excess kurtosis most likely has :()
A. more extreme outcomes.
B. less observations clustered around the mean.
C. a longer tail on the left side than on the right side.
哪项不符合急性特发性血小板减少性紫癜的表现
A.多见于儿童B.多有畏寒、发热C.多见于四肢、粘膜出血D.内脏出血E.脾肿大和贫血