男性，32岁。以"反复腹痛8年"为主诉入院，腹痛表现为右下腹和脐周为主的绞痛，伴腹泻

已知a＞b，那么-a+5______-b+5．

In order to improve English, ________________.

A．Jenny’s father bought her a lot of tapes

B．Jenny bought a lot of tapes for herself

C．a lot of tapes were bought by Jenny

D．a lot of tapes were bought by Jenny’s father

典型的法洛四联征不包括（）

A.主动脉骑跨

B.右心室肥厚

C.肺动脉狭窄

D.三尖瓣下移

E.室间隔缺损

某投资者采用固定比例投资组合保险策略进行投资，初始资金为90万元，市值底线为70万元，乘数为3，若股票下跌20%，国债价格不变，此时投资于国债的金额相应变为______。

A．66
B．62
C．58
D．54

空调客车应急灯的电压为（）。

A.36V

B.48V

C.110V

D.220V