Which of the following gives a general idea of how the noise-killing system works?
A.By producing pressure waves going in the opposite direction.
B.By mixing high frequency sound waves with low frequency sound waves.
C.By mixing new sound waves with the noise and sending them out together.
D.By making copies of tire unwanted sound waves and letting them out a little later.
Which of the following gives a general idea of how the noise killing system works?
A.By producing pressure waves going in the opposite direction.
B.By mixing high frequency sound waves with low frequency sound waves.
C.By mixing new sound waves with the noise and sending them out together.
D.By making copies of the unwanted sound waves and letting them out a little later.
A.9380有霜露白和流沙金
B.9380的厚度和重量都占优势
C.9380最厚11.6mm,最薄7.8mm,重量1.33kg
D.三款产品中,只有9380有双风扇和双铜管设计
E.9380续航时间高达12小时
A.面积
B.体积
C.厚度
D.重量
在AutoCAD中画点的命令是
(A)point
(B)donut
(C)hatch
(D)solid
A、{Visual Fox Pro}
B、""Visual Fox Pro""
C、["Visual Fox Pro"]
D、Visual Fox Pro
第三节 词语配伍
从上边一栏中找出一个与下边一栏的含义相符的选项。
[A]She works in a hospital.
[B]He teaches Chinese.
[C]By bike.
[D] He is a worker.
[E] I like it very much
[F] Yes, I do.
What does Teacher Li teach?