每一种生命都有其存在的价值和意义,所有生命之间都有着微妙的和谐关系。[ ]
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It was in the supermarket I met Jenny yesterday.
A.what
B.which
C.that
D.there
悬浮区熔法检验多晶硅中基磷含量时,采用快速区熔法的工艺时,第一次区熔时,第一区熔区停留挥发时间()左右。
A.3min
B.5min
C.7min
D.10min