养老金待遇支出是指按规定支付给参保农村居民的养老金待遇支出。

区域风险包括（）。

A.市场风险

B.汇率风险

C.外部因素引发的区域风险

D.内部因素导致的区域风险

E.利率风险

Mary once taught English in a remote village school as a volunteer, which is ________ only on foot.

A．acceptable

B．accessible

C．available

D．appropriate

Mike's father, as well as his mother, commanded that he _____ home.

 [ ]

A. stayed

B. could stay

C. stay

D. has stayed

处理不合格过程输出，产品和服务的方法包括（）

A.纠正缺陷

B.暂停产品和服务的提供

C.获得放行产品或服务的授权

D.A+B+C

DVD-ROM光盘可存储17GB的信息，比普通CD-ROM光盘的存储容量(650MB)大。DVD-ROM光盘是通过______来提高存储容量的。

A．减小读取激光波长，减小光学物镜数值孔径

B．增大读取激光波长，增大光学物镜数值孔径

C．增大读取激光波长，减小光学物镜数值孔径

D．减小读取激光波长，增大光学物镜数值孔径