如果某BCSU内由不同的PCU硬件，通过什么指令可以看出这些不同的种类（）A.ZFX

         I am actually the first cancer survivor to reach the summit of the world’s highest mountain-
Mt.Everest. When I was _1_ 13, I got cancer and the doctors gave me three months to _2_. Luckily,
I recovered. When I was 15, I got _3_ form of cancer which was considered much worse __4_
the doctors gave me only two weeks to live. Again I __5__.   Being the only person in the world to
have _6_ had these two kinds of cancer, I really felt I should _7_ my story with others to encourage
and _8__ their lives. On May 16th, 2002, I became the first cancer survivor to _9__  the summit of
Mt. Everest.   Since then, I have been _10__ enough to reach the summits of three of the world’s
seven __11_ summits and have __12_ internationally about my life and adventures to countless
people and organizations. When I got to the summit of Everest, I brought a __13_ and left it there.
There were lots of names of people who had been _14_ by cancer on the flag. I did so just in honour
of the _15__ of cancer patients worldwide. Every time I reached a highest point, _16__ in Africa or
in South America, I always left a flag on it! My final _17__ is to reach the North and South poles on
foot.   I want to __18_ courage and inspiration all over the world. I want to tell those suffering from
cancer __19__ anyone who loves life that they can __20_ big and they should never give up.