【单选题】一分钟声音,双声道、8位采样位、原始声音频率为11.025kHz,数据量为()
【单选题】13-4、公式As=Aa/S=SaR( f P-1)/ ρ 0 中, ρ 0 和 f 分别代表的含义是( )。
A.
p 0 为入流污泥浓度, g/m 3 f 为溶解效率
B.
p 0 为出流污泥浓度, g/m 3 f 为溶解系数
C.
p 0 为入流污泥浓度, mg/m 3 f 为溶解效率
D.
p 0 为出流污泥浓度, mg/m 3 f 为溶解系数
【单选题】圆x2-6x+y2+2y=0关于直线方程为y= x对称的圆的方程
【简答题】写出单词的正确形式。 1. We are writing to you about ___________(保护) wild animals. 2. If farmers _________(继续)to make new farmland, wild animals won't get enough food. 3. His job is (喂)animals. 4. You can know t...
【单选题】已知圆x 2 +y 2 =4与圆x 2 +y 2 -6x+6y+14=0关于直线l对称,则直线l的方程是 [ ]
【简答题】将下列句子变成相对应的语态。 1. Farmers grow rice in the field. by farmers in the field. 2. This sad novel was written by Charles Dickens. Charles Dickens this sad novel. 3. The exciting movie was directed by Zhang...
【简答题】单词拼写。 1. Trees along the road provide ____ (遮蔽) from the sun for the farmers. 2. As e____ was cut off, they had to use candles instead. 3. The poor man was badly i____ in the train accident. 4. The __...
【简答题】一分钟声音,双声道、8位采样、采样频率44.1kHz,则该声音文件的大小为 ( )MB(保留两位小数)。