题目内容

In many simple organisms, including bacteria and various protists, the life cycle is completed within a single generation: an organism begins with the fissionof an existing individual; the new organism grows to maturity; and it then splits into two new individuals, thus completing the cycle.

A. split
B. fusion
C. explosion
D. modification

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如下图所示，若低位地址(A0～A11)接在内存芯片地址引脚上，高位地址(A12～A19)进行片选译码(其中，A14和A16没有参加译码)，且片选信号低电平有效，则对下图所示的译码电路，不属于此译码空间的地址是()。

AB000H～ABFFFH
BB000 H～BBFFFH
C. EF000H～EFFFFH
D. FE000H～FEFFFH

Some industrial workers were trying, quietly and peacefully, to create a network of free trade unions, modeled presumably on Poland's famous Solidarity, which was an anathema to the regime.

A. a curse
B. a coup
C. a spume
D. a sinew

若对n阶对称矩阵A[1．．n，1．．n]以行序为主序方式下将其下三角的元素(包括主对角线上的所有元素)依次存放于一维数组B[1．．n(n+1)／2]中，则在B中确定aij(i

A. i(i-1)／2+j
B. j(j一1)／2+i
C. i(i+1)／2+j
D. j(j+1)／2+i

索化二叉树中，t所指结点没有左子树的充要条件是()。

A. t-＞left=NULL
B. t-＞ltag=1
C. t-＞ltag=1且t-＞left=NULL
D. 以上都不对