皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
应用有人工反射体的参考试块主要目的是:
A.
作为探测时的校准基准并为评价工件一般缺陷严重程度提供依据
B.
为探伤人员提供一种确定缺陷实际尺寸的工具
C.
为检出小于某一规定的参考反射体的所有缺陷提供保证
D.
提供一个能精确模拟某一临界尺寸自然缺陷的参考反射体
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【判断题】处理器调度程序在该程序执行过程中要控制其 运行状态
A.
正确
B.
错误
查看完整题目与答案
【单选题】Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:The determination of the presence of tumors has seen the standard screening proced...
A.
To better determine if tumors are present, high-energy techniques are now being incorporated into standard screening procedures.
B.
The determining of the presence of tumors has seen the standard screening procedures incorporation of high-energy techniques.
C.
The determination of tumors has seen the standard screening procedures incorporation of high-energy techniques.
D.
The determination of the presence of tumors has seen the incorporation of high-energy techniques in standard screening procedures.
查看完整题目与答案
【单选题】在降低定子电压调试过程中,三相异步交流电动机不会( )
A.
减小最大转矩
B.
减小同步转速
C.
减小启动转矩
D.
减小负载能力
查看完整题目与答案
【单选题】下列先天性心脏病中出现明显紫绀的是:
A.
心房间隔缺损;
B.
心室间隔缺损;
C.
法乐(Fallot)四联症;
D.
主A狭窄;
E.
肺A狭窄。
查看完整题目与答案
【单选题】The purpose of writing this text is probably to
A.
praise the high technological level of Harvard Medical School.
B.
comfort those patients who have developed coronary heart disease.
C.
introduce a new therapy to cure heart disease.
D.
criticize the traditional bypass surgery.
查看完整题目与答案
【单选题】设A是4×5矩阵,B是5×4矩阵,且AB=E,则r(A)=( )
A.
5 ,
B.
1 ,
C.
4 ,
D.
20
查看完整题目与答案
【单选题】处理器调度程序在该程序执行过程中要控制其( )
A.
程序间的同步
B.
程序间的通信
C.
运行状态
D.
运行时间
查看完整题目与答案
【单选题】下列先天性心脏病中出现明显紫绀的是( )
A.
心房间隔缺损
B.
心室间隔缺损
C.
法乐(Fallot)四联症
D.
主动脉狭窄
E.
肺动脉狭窄
查看完整题目与答案
【判断题】The writing of high-level government documents is usually expected to be informal.
A.
正确
B.
错误
查看完整题目与答案
【单选题】设A和B分别为4×3的和3×5的矩阵,且AB=O(零矩阵),其中B为非零矩阵,下列结论中一定正确的是
A.
B的列向量均为齐次线性方程组Ax=0的解。
B.
B的行向量均为齐次线性方程组Ax=0的解。
C.
A的秩r(A)=3
D.
A的秩r(A)=1
查看完整题目与答案
相关题目：
【判断题】处理器调度程序在该程序执行过程中要控制其 运行状态
A.
正确
B.
错误
查看完整题目与答案
【单选题】Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:The determination of the presence of tumors has seen the standard screening proced...
A.
To better determine if tumors are present, high-energy techniques are now being incorporated into standard screening procedures.
B.
The determining of the presence of tumors has seen the standard screening procedures incorporation of high-energy techniques.
C.
The determination of tumors has seen the standard screening procedures incorporation of high-energy techniques.
D.
The determination of the presence of tumors has seen the incorporation of high-energy techniques in standard screening procedures.
查看完整题目与答案
【单选题】在降低定子电压调试过程中,三相异步交流电动机不会( )
A.
减小最大转矩
B.
减小同步转速
C.
减小启动转矩
D.
减小负载能力
查看完整题目与答案
【单选题】下列先天性心脏病中出现明显紫绀的是:
A.
心房间隔缺损;
B.
心室间隔缺损;
C.
法乐(Fallot)四联症;
D.
主A狭窄;
E.
肺A狭窄。
查看完整题目与答案
【单选题】The purpose of writing this text is probably to
A.
praise the high technological level of Harvard Medical School.
B.
comfort those patients who have developed coronary heart disease.
C.
introduce a new therapy to cure heart disease.
D.
criticize the traditional bypass surgery.
查看完整题目与答案
【单选题】设A是4×5矩阵,B是5×4矩阵,且AB=E,则r(A)=( )
A.
5 ,
B.
1 ,
C.
4 ,
D.
20
查看完整题目与答案
【单选题】处理器调度程序在该程序执行过程中要控制其( )
A.
程序间的同步
B.
程序间的通信
C.
运行状态
D.
运行时间
查看完整题目与答案
【单选题】下列先天性心脏病中出现明显紫绀的是( )
A.
心房间隔缺损
B.
心室间隔缺损
C.
法乐(Fallot)四联症
D.
主动脉狭窄
E.
肺动脉狭窄
查看完整题目与答案
【判断题】The writing of high-level government documents is usually expected to be informal.
A.
正确
B.
错误
查看完整题目与答案
【单选题】设A和B分别为4×3的和3×5的矩阵,且AB=O(零矩阵),其中B为非零矩阵,下列结论中一定正确的是
A.
B的列向量均为齐次线性方程组Ax=0的解。
B.
B的行向量均为齐次线性方程组Ax=0的解。
C.
A的秩r(A)=3
D.
A的秩r(A)=1
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题