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【多选题】
（121~125题共用备选答案）
A.
发病率
B.
死亡率
C.
罹患率
D.
病死率
E.
患病率 121. 一定时期内，一定范围人群中某病新病例发生的频率 122.小范围短时期内的发病率 123.在某特定时间内总人口中某病新旧病例数所占的比例 124.在一定期间内，某人群中总死亡人数在该人群中所占的比例 125.一定时期内（一般以年为单位）某病患者中因该病死亡的比例
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参考答案：
举一反三
【判断题】连续周期信号的频谱特点包括离散性、谐波性和周期性;
A.
正确
B.
错误
查看完整题目与答案
【简答题】连续周期信号的频谱特点有：（）、谐波性和（）
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 10% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed ...
A.
an ambiguous change; a decrease; an increase
B.
an ambiguous change; an increase; a decrease
C.
an increase; a decrease; an increase
D.
an ambiguous change; an ambiguous change; an ambiguous change
E.
a decrease; an ambiguous change; an ambiguous change
查看完整题目与答案
【多选题】连续周期信号的频谱特点有( )
A.
离散性
B.
收敛性
C.
谐波性
D.
周期性
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 5% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
no change; no change; no change
B.
an increase; an increase; an increase
C.
a decrease; an increase; an increase
D.
an increase; a decrease; a decrease
E.
a decrease; a decrease; a decrease
查看完整题目与答案
【单选题】连续周期信号的频谱特点是( )。
A.
周期连续谱
B.
周期离散谱
C.
非周期连续谱
D.
非周期离散谱
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 1% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
an increase; a decrease; an increase
B.
an ambiguous change; an increase; a decrease
C.
an ambiguous change; an ambiguous change; an ambiguous change
D.
a decrease; an ambiguous change; an ambiguous change
查看完整题目与答案
【判断题】Java中的异常类都继承自java.lang.Throwable类。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the specific factors model, a 5% decrease in the price of food accompanied by a 5% decrease in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
no change; no change; no change
B.
an increase; an increase; an increase
C.
a decrease; an increase; an increase
D.
an increase; a decrease; a decrease
E.
a decrease; a decrease; a decrease
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 5% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
a decrease; an increase; an increase
B.
a decrease; a decrease; a decrease
C.
no change; no change; no change
D.
an increase; a decrease; a decrease
查看完整题目与答案
相关题目：
【判断题】连续周期信号的频谱特点包括离散性、谐波性和周期性;
A.
正确
B.
错误
查看完整题目与答案
【简答题】连续周期信号的频谱特点有：（）、谐波性和（）
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 10% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed ...
A.
an ambiguous change; a decrease; an increase
B.
an ambiguous change; an increase; a decrease
C.
an increase; a decrease; an increase
D.
an ambiguous change; an ambiguous change; an ambiguous change
E.
a decrease; an ambiguous change; an ambiguous change
查看完整题目与答案
【多选题】连续周期信号的频谱特点有( )
A.
离散性
B.
收敛性
C.
谐波性
D.
周期性
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 5% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
no change; no change; no change
B.
an increase; an increase; an increase
C.
a decrease; an increase; an increase
D.
an increase; a decrease; a decrease
E.
a decrease; a decrease; a decrease
查看完整题目与答案
【单选题】连续周期信号的频谱特点是( )。
A.
周期连续谱
B.
周期离散谱
C.
非周期连续谱
D.
非周期离散谱
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 1% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
an increase; a decrease; an increase
B.
an ambiguous change; an increase; a decrease
C.
an ambiguous change; an ambiguous change; an ambiguous change
D.
a decrease; an ambiguous change; an ambiguous change
查看完整题目与答案
【判断题】Java中的异常类都继承自java.lang.Throwable类。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the specific factors model, a 5% decrease in the price of food accompanied by a 5% decrease in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
no change; no change; no change
B.
an increase; an increase; an increase
C.
a decrease; an increase; an increase
D.
an increase; a decrease; a decrease
E.
a decrease; a decrease; a decrease
查看完整题目与答案
【单选题】In the specific factors model, a 5% increase in the price of food accompanied by a 5% increase in the price of cloth will cause ________ in the welfare of labor, ________ in the welfare of the fixed f...
A.
a decrease; an increase; an increase
B.
a decrease; a decrease; a decrease
C.
no change; no change; no change
D.
an increase; a decrease; a decrease
查看完整题目与答案
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