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【多选题】
以下说法中哪些是错误的？
A.
用脉冲响应不变法可以设计出IIR数字滤波器。
B.
用双线性变换法可以设计出或带阻IIR数字滤波器。
C.
用双线性变换法设计IIR数字滤波器时不需要对数字滤波器截止频率进行预畸，以获得模拟滤波器截止频率的设计指标。
D.
用脉冲响应不变法设计IIR数字滤波器时需要先对数字滤波器截止频率进行预畸，以获得模拟滤波器截止频率的设计指标。
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参考答案：
举一反三
【单选题】Read the passage in unit 2 and finish the following multiple-choice questions. 1. Cape Cod was NOT formed .
A.
in the last Ice Ages.
B.
more than a hundred centuries ago
C.
in 11,000 BC
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【单选题】“消费者普遍认为海尔牌子的冰箱好,您的印象如何?”属于什么性质的问句。
A.
诱导性问题
B.
断定性问题
C.
专业性问题
D.
笼统性问题
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【单选题】下列不属于营养疗法适应证的是（）
A.
近期体重下降超过正常体重的10%
B.
血清白蛋白＜20g/L
C.
连续7日以上不能正常进食者
D.
已确诊为营养不良者
E.
可能发生高分解代谢的应激状态病人
查看完整题目与答案
【简答题】Translate the following logistics-related words and phrase into Chinese (请把以下与物流相关的词语根据后面的示意翻译成中文,只翻译划线单词或词组即可) 1. bill of lading :a list of the goods being carried, especially on a ship 2. cargo: the...
查看完整题目与答案
【单选题】下列不属于代谢和营养紊乱性疾病的一项是（ ）
A.
糖尿病
B.
骨质疏松
C.
肥胖
D.
膀胱炎
查看完整题目与答案
【单选题】呼吸的基本节律产生于( )
A.
脊髓
B.
延髓
C.
脑桥中下部
D.
脑桥上部
E.
中脑
查看完整题目与答案
【单选题】Which of the following statements is CORRECT according to the passage?
A.
The Barents Sea cod stock has been declining since the 1990s.
B.
In North America, the cod catch is now just 10 percent of what it was two decades ago.
C.
Barents Sea cod were not threatened by expanded shipping and oil exploration plans instead of by illegal catches.
D.
Both Russia and Norway will reopen the potentially oil-rich sea for exploration.
查看完整题目与答案
【单选题】下列疾病中不属于营养代谢病的是:
A.
佝偻病
B.
砷中毒
C.
白肌病
D.
痛风
查看完整题目与答案
【单选题】下列不属于营养代谢病的是()。
A.
维生素A缺乏
B.
钙磷比例失调
C.
奶牛酮病
D.
大肠杆菌病
查看完整题目与答案
【单选题】Which of the following is an effective opening for a routine information request letter?
A.
Please answer the following questions about your Web hosting services.
B.
My name is Jill Aubrey, and I am the office manager for Cape Consulting Inc.
C.
I recently read an article about your firm in the Cape Cod Times .
D.
Cape Consulting Inc. is the premier communication-consulting firm in the Cape and islands area.
查看完整题目与答案
相关题目：
【单选题】Read the passage in unit 2 and finish the following multiple-choice questions. 1. Cape Cod was NOT formed .
A.
in the last Ice Ages.
B.
more than a hundred centuries ago
C.
in 11,000 BC
查看完整题目与答案
【单选题】“消费者普遍认为海尔牌子的冰箱好,您的印象如何?”属于什么性质的问句。
A.
诱导性问题
B.
断定性问题
C.
专业性问题
D.
笼统性问题
查看完整题目与答案
【单选题】下列不属于营养疗法适应证的是（）
A.
近期体重下降超过正常体重的10%
B.
血清白蛋白＜20g/L
C.
连续7日以上不能正常进食者
D.
已确诊为营养不良者
E.
可能发生高分解代谢的应激状态病人
查看完整题目与答案
【简答题】Translate the following logistics-related words and phrase into Chinese (请把以下与物流相关的词语根据后面的示意翻译成中文,只翻译划线单词或词组即可) 1. bill of lading :a list of the goods being carried, especially on a ship 2. cargo: the...
查看完整题目与答案
【单选题】下列不属于代谢和营养紊乱性疾病的一项是（ ）
A.
糖尿病
B.
骨质疏松
C.
肥胖
D.
膀胱炎
查看完整题目与答案
【单选题】呼吸的基本节律产生于( )
A.
脊髓
B.
延髓
C.
脑桥中下部
D.
脑桥上部
E.
中脑
查看完整题目与答案
【单选题】Which of the following statements is CORRECT according to the passage?
A.
The Barents Sea cod stock has been declining since the 1990s.
B.
In North America, the cod catch is now just 10 percent of what it was two decades ago.
C.
Barents Sea cod were not threatened by expanded shipping and oil exploration plans instead of by illegal catches.
D.
Both Russia and Norway will reopen the potentially oil-rich sea for exploration.
查看完整题目与答案
【单选题】下列疾病中不属于营养代谢病的是:
A.
佝偻病
B.
砷中毒
C.
白肌病
D.
痛风
查看完整题目与答案
【单选题】下列不属于营养代谢病的是()。
A.
维生素A缺乏
B.
钙磷比例失调
C.
奶牛酮病
D.
大肠杆菌病
查看完整题目与答案
【单选题】Which of the following is an effective opening for a routine information request letter?
A.
Please answer the following questions about your Web hosting services.
B.
My name is Jill Aubrey, and I am the office manager for Cape Consulting Inc.
C.
I recently read an article about your firm in the Cape Cod Times .
D.
Cape Consulting Inc. is the premier communication-consulting firm in the Cape and islands area.
查看完整题目与答案
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