《浙江省农村合作金融机构机房管理指引》规定,机房必须双人进出,但可以单人操作。
参考答案:错
—How do you know that he has bought ___ MP5?
--- He wrote ____ e-mail to me yesterday.
A.a, an
B.an, an
C.a, the
D.the, a
( )是一种有价证券,它是股份有限公司签发的证明股东所持股份的凭证。
A.股票
B.债券
C.基金
D.衍生品