题目内容
(请给出正确答案)
[单选题]
- I was worried about my maths, but Mr.Brown gave me an A.-().
A.Don't worry about it.
B.Congratulations! That's a difficult course.
C.Mr、Brown is very good.
D.Good luck to you!
提问人:网友王静平
发布时间:2022-07-04
A.Don't worry about it.
B.Congratulations! That's a difficult course.
C.Mr、Brown is very good.
D.Good luck to you!
A.ρdmax↑,wo↑
B.ρdmax↑,wo↓
C.ρdmax↓,wo↑
D.ρdmax↓,wo↓
如果以W表示声波的功率,Wo标示基准功率,Lw表示声波的声功率级,那么()。
A.Lw=1010gW/Wo(dB)
B.Lw=2010gW/Wo(dB)
C.Lw=101nW/Wo(dB)
D.Lw=201nW/Wo(dB)
A.rm越大, wo越大
B.rm越大, wo越小
C.rm越小, wo越大
D.rm越小, wo越小
A.Wohin, stehen
B.Wohin, stellen
C.Wo, stehen
D.Wo, stellen
只读光盘的简称是______。
A) MO B) WORM C) WO D) CD-ROM
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