Before starting a diesel engine, you should always（）..

第1题

[简答题] 阅读下面的程序，回答问题 DATA SEGMENT BUF DB '1234' N=$-BUF BCD DB N DUP(?) DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START：MOV AX,DATA MOV DS,AX LEA SI,BUF MOV CX,N LEA DI,BCD+N-1 LOOP1：MOV AL,[SI] SUB AL,30H MOV [DI],AL INC SI DEC DI DEC CX JNE LOOP1 MOV AH,4CH INT 21H CODE ENDS END START 如果将代码段中的指令LEA DI，BCD+N-1改成LEA DI，BCD；DEC DI改成INC DI，其它指令不变，程序执行后，从BCD开始的N个字节单元中的内容是什么？

点击查看答案

第2题

[单选题] 操作完后，关掉电动机。（）

A、After operation, start the electric motor. B、Before operation, stop the electric motor. C、Before operation, start the electric motor. D、After operation, stop the electric motor.

点击查看答案

第3题

[简答题] 阅读下面的程序，回答问题 DATA SEGMENT BUF DB '1234' N=$-BUF BCD DB N DUP(?) DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START：MOV AX,DATA MOV DS,AX LEA SI,BUF MOV CX,N LEA DI,BCD+N-1 LOOP1：MOV AL,[SI] SUB AL,30H MOV [DI],AL INC SI DEC DI DEC CX JNE LOOP1 MOV AH,4CH INT 21H CODE ENDS END START 画出内存分配图。

点击查看答案

第4题

[简答题] 阅读下面的程序，回答问题 DATA SEGMENT BUF DB '1234' N=$-BUF BCD DB N DUP(?) DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START：MOV AX,DATA MOV DS,AX LEA SI,BUF MOV CX,N LEA DI,BCD+N-1 LOOP1：MOV AL,[SI] SUB AL,30H MOV [DI],AL INC SI DEC DI DEC CX JNE LOOP1 MOV AH,4CH INT 21H CODE ENDS END START 找出一条指令代替指令“SUB AL，30H”，使程序功能不变。

点击查看答案

第5题

[简答题] 阅读下面的程序，回答问题 DATA SEGMENT BUF DB '1234' N=$-BUF BCD DB N DUP(?) DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START：MOV AX,DATA MOV DS,AX LEA SI,BUF MOV CX,N LEA DI,BCD+N-1 LOOP1：MOV AL,[SI] SUB AL,30H MOV [DI],AL INC SI DEC DI DEC CX JNE LOOP1 MOV AH,4CH INT 21H CODE ENDS END START 说明程序功能，程序执行后，从BCD开始的N个字节单元中的内容是什么？

点击查看答案

第6题

[单选题] The diesel engine must be started before it can run by it self For this purpose （） has to be used.

A、a starting system B、the starting air C、a starting operation D、A, B and C

点击查看答案

第7题

[简答题] 阅读下面的程序，回答问题 DATA SEGMENT BUF DB '1234' N=$-BUF BCD DB N DUP(?) DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START：MOV AX,DATA MOV DS,AX LEA SI,BUF MOV CX,N LEA DI,BCD+N-1 LOOP1：MOV AL,[SI] SUB AL,30H MOV [DI],AL INC SI DEC DI DEC CX JNE LOOP1 MOV AH,4CH INT 21H CODE ENDS END START 取消数据段的BCD存储区，将处理后的数据放回原处，应如何修改程序？

点击查看答案

第8题

[单选题] If the main engine starting consecutively failed （） times, it should be found the cause before another starting.

A、2 B、3 C、4 D、5

点击查看答案

第9题

[单选题] When starting CPR on a drowning victim，you should（）.

A、start chest compressions before the victim is removed from the water B、drain water from the lungs before ventilating C、begin mouth-to-mouth ventilations as soon as possible D、do not tilt the head back since it may cause vomiting

点击查看答案

第10题

[单选题] When starting CPR on a drowning victim，you should（）.

A、start chest compressions before the victim is removed from the water B、drain water from the lungs before ventilating C、begin mouth-to-mouth ventilations as soon as possible D、do not tilt the head back since it may cause vomiting

点击查看答案

Before starting a diesel engine, you should always（）

请使用微信扫码支付