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【多选题】
非倒金字塔结构比较常见的形式有:
A.
自由式结构
B.
时间顺序结构
C.
悬念式结构
D.
并列式结构
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【单选题】设 为 阶矩阵, 在齐次线性方程组 中,如果 ,那么此方程组解的情况是( )。
A.
有非零解
B.
只有零解
C.
有有限个非零解
D.
无法确定
【简答题】已知椭圆 C: x 2 a 2 + y 2 b 2 =1(a>b>0) 的右顶点A为抛物线y 2 =8x的焦点,上顶点为B,离心率为 3 2 (1)求椭圆C的方程; (2)过点 (0, 2 ) 且斜率为k的直线l与椭圆C相交于P,Q两点,若线段PQ的中点横坐标是 - 4 2 5 ,求直线l的方程.
【单选题】What is an "operating" cycle?
A.
A cycle of transactions that converts cash inflows to cash outflows, or vice versa.
B.
A cycle where there is receipt of funding from investors, those funds are used to generate returns from investments and operations, and then the funds are returned to investors.
C.
A cycle where a property is purchased that has long-term future benefits for the enterprise, which ultimately results in cash inflows, and then the property is disposed of.
D.
A cycle that involves the purchase of items such as inventory; production, sales, delivery of goods or provision of services; and receipts from customers.
【单选题】可编程并行接口芯片8255能够在一个口上同时具有8位输入/输出功能的是:()
A.
方式0
B.
方式1
C.
方式2
D.
以上都可以
【简答题】简述社区矫正对象心理矫治工作者的构成
【简答题】一片可编程芯片8255有【1】个8位的并行端口.
【简答题】What is an operating system? How many types are operating systems categorized into? What are they? What is the embedded operating system applied to ?
【简答题】What can be inferred from the last paragraph?( ) [A] Newspapers are now operating their own websites. [B] Websites begin to involve in the traditional newspaper business. [C] Competition on ads will b...
【单选题】下列不属于原生质体融合意义是( )。
A.
实现远缘杂交,创造新物种
B.
创造细胞质杂种
C.
培育作物新品种
D.
培育单倍体植株
【单选题】人体唯一氮的来源是
A.
脂肪
B.
蛋白质
C.
维生素
D.
无机盐
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