49.我 来 没有 中国 以前 过 1 2 3 4 5 6______

8051单片机的ALE引脚在单片机正常工作后以(1/6______ )晶振频率输出正脉冲。

下表是一个三元线性回归模型的回归结果： 方差来源SSdfMSSF回归610(2)(4)(6)残差(1)(3)(5)总离差1012.5519表中（1）-（6）的结果分别为：空1______ 空2______ 空3______ 空4______ 空5______ 空6______ 可决系数及调整的可决系数分别为：空7______ 空8______

Man: May I come in?Woman: _6______ A: Nice to see you! B: I am always energetic and enthusiastic. C: That's very nice of you. D: Fine, thank you for coming. E: Yes, please. F: I like to play sports. G: Well, what kind of person do you like?

鼠疫、霍乱、黄热病的潜伏期分别为()天。 A: 6、6、5 B: 5、6、6 C: 6、5、6 D: 6、6、6

Complete the directions with the words in the box. along at at end go opposite take turn 1______ to the end of this street, 2______ right and then 3 ______ the third street on the left. Go back along this street, turn left 4______ the clock and then turn right 5______ the traffic lights. Walk to the 6______ of this street, turn left and it’s half way 7______ the street, 8________ a supermarket.

【单选题】根据数字规律填一填 6 7 6 6 7 6 6 7 6 6 ___ A. 6 B. 7 C. 8

以下哪种方式可在Excel中输入数值-6 _______。: -6/#/6/#/\6/#/“6

钢丝绳按其结构组成有6 19、6 24、()三种。 A: 6 B: 6 C: 6 D: 6

设FIR数字滤波器的系统函数为[img=281x24]180364e20de59b6.png[/img]求其单位脉冲响应h(n)= ；并判断该数字滤波器是否具有线性相位特性 。（） A: {1/6, 0.9/6, 2.2/6, 0.9/6, 1/6} ；非线性相位特性 B: {0, 0.9/6, 2.2/6, 0.9/6, 1/6} ；严格线性相位特性 C: {1/6, 1/6, 2.2/6, 0.9/6, 1/6} ；非线性相位特性 D: {1/6, 0.9/6, 2.2/6, 0.9/6, 1/6} ；严格线性相位特性