We have to give up this plan, for we are

MHCⅠ类分子将内源性抗原呈递给下列哪种细胞（）

 

A.CD4⁺Th1

B.CD4⁺Th2

C.CD8⁺T

D.B细胞

E.以上都不是

下列哪种成分不直接参与核蛋白体的合成（）

A.DNA聚合酶

B.RNA聚合酶

C.mRNA

D.tRNA

E.蛋白质

地层坍塌压力越大，该地层越稳定。（）

患儿，2岁。患百日咳后，痉咳缓解，出现低热干咳，盗汗，夜寐不安，舌质红，苔光剥。治疗应首选的方剂是（）

A.桑白皮汤

B.养阴清肺汤

C.沙参麦冬汤

D.清燥救肺汤

E.人参五味子汤

An analyst does research about earnings per share and gathers the following information about a company's planned share repurchase using borrowed funds:

Before-tax borrowing	11%
Marginal tax rate	35%
Price / Earnings ratio before share repurchase	13

All else being equal, compared to earnings per share before the repurchase, earnings per share after the repurchase will most likely:（）

A. decrease.

B. remain the same.

C. increase.