根据《企业破产法》的规定，人民法院应当自裁定受理破产申请之日起( )内通知已知债权人。

A．10 日

B．15日

C．25 日

D．30 日

The CPU does not have to look (66) all of RAM to find the spot it needs. But RAM only (67) the data temporarily. As soon as you switch the computer (68) , all that information disappears from the RAM. When you switch the computer on again, the RAM is (69) , and ready (70) a new program and new data.

（69）处填（）。

A．full

B．empty

C．zero

D．blank