单项选择题
A．0.7 percent.
B．0.9 percent.
C．20 percent.
D．80 percent.
- A.0.7
B.
B．0.9
C.
C．20
D.
D．80
E.
点击查看答案
相关考题
-
单项选择题
听力原文：W: What about the lecture given in the auditorium this afternoon?M: To tell the troth I would rather have spent nay time on the research report.Q: What does the men mean?(13)A．He liked the lecture very much.B．He regretted going to the lecture.C．He thought he should finish his research report first.D．He thought he had spent too much time on the research report.
A.
Q:
B.He
C.
B．He
D.
C．He
E.
D．He
F. -
多项选择题
自动调节进行比较的量值有（）。
A.测量值
B.扰动值
C.给定值
D.组态值 -
单项选择题
关于有线电视系统部件安装符合下列要求的说法中错误的是（）。
A.部件及附件的安装应牢固、安全并便于测试、检修和更换
B.可以安装在厨房、厕所、锅炉房等场所
C.室内安装系统输出口用户面板时，其下沿距离地面高度可能为0．3m
D.室内安装系统输出口用户面板时，其下沿距离地面高度可能为1．5m
