用 555定时器组成施密特触发器 , 当输入控制端外接 10V电压时,回差电压为( ) 。_学小易找答案

【单选题】Dahlia Ltd is considering investing in a two-year project. The initial investment in machinery and set-up costs will be ￡360,000 payable immediately. In addition, working capital of ￡24,000 is required at the beginning of the contract which will be released at the end of the two years. Dahlia has a cost of capital of 15%. In order to make the project financially viable, what is the minimum acceptable contract price to be received at the end of the contract?

【单选题】相同 “1 ” ,不同为 0，它的逻辑关系是( )。

【单选题】A company has budgeted sales revenue of ￡750,000 for its first quarter and achieved a contribution ratio of 30%. Fixed production costs are ￡125,000 and fixed selling costs are ￡35,000. What is the breakeven sales revenue?

下列电路不属于时序逻辑电路 ( ) 。

【单选题】常用于计算机 128 个 ASCII 如果用编码器正常编码码字，则需要( )二进制信号。

【单选题】三变量函数 最小项表示中不包括以下哪一项( )。

在下列电路中，不属于组合逻辑电路的是( )。

和 TTL电路相比,CMOS电路最突出的优点是( )

【单选题】Sudan plc makes a single product and incurs fixed costs of ￡125,000 per month. Variable cost per unit is ￡55 and each unit sells for ￡105. Monthly sales demand is 6,000 units. The breakeven point in terms of monthly sales units is:

【论述题】只需列出思路，无需计算。

触发器是指可以存储的( )二进制数字信号的基本逻辑单元电路。

为使 3线-8线译码器74LS138能正常工作，使能端正常工作S1、S2 ’ 、 S3 ’ 的电平应取( )

【多选题】谁最好看？

介绍自己的生病经历，并整理成一篇文章。

【单选题】On the last day of the financial year a division has net assets with a total carrying amount of ￡720,000. The return on investment (ROI) for the division is 15%. The division manager is considering selling a non-current asset immediately prior to the year end. The non-current asset has a carrying amount of ￡36,000 and will sell for a profit of ￡14,000. What would be the division's ROI immediately after the sale of the asset at the end of the year?

【单选题】关于张黎明的错误表达是错误的

多谐振荡器可以产生( ) 。

【单选题】以下公式不正确 ( ) 。

已知某触发的特征表如下( A 、 B 输出信号的逻辑表达式为触发器的输入) ( ) 。

【计算题】

【单选题】A Dublin Ltd is taking out a leasing agreement for five years. Dublin must pay ￡24,000 at the beginning of the first year as a deposit, to be followed by four equal payments at the beginning of Years 2, 3, 4 and 5. At a discount rate of 10%, the present value of the four equal payments is ￡63,590. The total amount to be paid during the lease period is:

图 1 所 示电路, B=1 时输出 F 为 ( ) 。

单选题将正弦波转换为同频矩形波，应使用 ( ) 。

晶体和非晶体的定义 ( 20分 ) 常见的晶格结构有哪些？ ( 15分 ) 合金的基本组织有哪三种？ ( 15分 ) 固溶体有哪两种类型？ ( 20分 ) 什么是固溶强化？ ( 30分 )

函数 F(A,B,C)=AB BC AC 最小的表达式是 ( )。

【单选题】用 施密特触发器由555定时器组成 , 当输入控制端外接 10V回差电压为电压( ) 。

【简答题】请按教材98页例5.3.制作多定压节点管网平差文本，拍照上传。

【简答】查阅今年中央一号文件对农业的态度，提取内容，谈为什么要找农业电子商务。

能够实现算术加法操作的电路是( )

在数字电路中，三极管主要工作 ( ) 两个区域。

【单选题】以下公式不正确( )。

【单选题】An investment will generate cash flows of ￡5,400 each year in Years 3 to 10 (ie, first amount to be received three years from now). The discount rate is 20% per annum. What is the present value of the cash flows?

【简答题】请总结学过的成对日语自他动词，拍照后在清明假后上传。

【单选题】相同 “0 ” ,不同为 它的逻辑关系是1( )。

【单选题】以下错误是( )。

【单选题】32 选 1 数据选择器需要 ( ) 地址输入端。

社会主义基本制度建立后，中国面临的主要问题是

【简答】请用动词、形容词、形容动词、名词四种简体形式造句，本周内拍照上传录音。

其他编写一个程序。第一行输出您的学号和姓名，从第二行输出小于您的学号的10个连续学号，并按学号从大到小的顺序输出。例如，如果您的学号为2018302811，则程序输出的10个连续学号应为：2018302810 ~ 2018302801,运行效果如下图所示。 注意: 提交程序源码截图和操作截图。 请独立完成，程序源码和操作截图不能相同。 这个问题需要循环控制结构来完成。

【单选题】以下公式不正确( ) 。

译码器 74LS138,若使输出 ,对应的输入端 应为( ) 。

图 1 所 示电路, B= 0 时输出 F 为 ( ) 。

【单选题】Suretream is a service company that holds no inventories. Each month the following relationships hold: Gross profit 30% of sales Closing trade payables 40% of cost of sales Suretream has budgeted sales of ￡116,400 in July and ￡87,600 in August. How much cash is budgeted to be paid in August to Suretream's suppliers?

【简答】两人一组制作给水管网组成和分类思维导图，拍照上传。

【简答题】开放谈谈你对山果的感受http://blog.sina.cn/dpool/blog/s/blog_4cb6bdbe0102y3jm.html

【单选题】Which of the following is an advantage of the payback method of investment appraisal?

【单选题】一只四输入端或非门,使其输出为 1 输入变量值组合有 ( ) 种。

【单选题】Which of the following is not a description of a 'top-down' budgeting process?

【单选题】Which of the following is a perspective that is monitored by the balanced scorecard approach to performance measurement?

【单选题】只有当两个输入变量的值全部为时 1时，输出为0，否则输出为1。这种逻辑关系被称为 为 ( )。