【单选题】【消耗次数：1】
幅频特性、相频特性等属于是（ ）。
①
电路性能的测量
②
电能量的测量
③
特性曲线的测量
④
电信号特性的测量
参考答案：
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纠错
相关题目
【单选题】
根据所测参数的类型，半导体分立器件测量仪器大致可分为（）。①直流参数测量仪器②交流参数测量仪器③极限参数测量仪器④晶体管特性图示仪
①
①②③
②
①②④
③
①②③④
④
②③④
随机题目
【单选题】
下列食物中属于优质蛋白的是( )。
①
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大米
②
Normal
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豆腐
③
Normal
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7.8 磅
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mso-bidi-theme-font:minor-bidi;
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山药
④
Normal
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false
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mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
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年糕
【单选题】
椅深实质椅面前后的长度，合适的椅深为（ ）
①
儿童大腿的后3/4应置于椅面上
②
儿童大腿的后1/2应置于椅面上
③
儿童大腿的4/5应置于椅面上
④
儿童小腿的后面不留空隙
【单选题】
佝偻病的发生是由于缺乏（ ）．
①
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②
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③
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④
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【单选题】
下列哪种方式是幼儿老师与家长谈话交往时较好的方式（ ）。
①
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谈话时不涉及别的孩子，以平等的身份采用日常用语与家长交谈
②
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只是向家长报告孩子的优点，让家长高兴
③
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对存在问题的孩子，向家长指出他们的教育观有问题
④
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只是向家长谈幼儿的问题，要家长注意或配合教育孩子
【单选题】
阳光中的紫外线照射到皮肤上可生成( )。
①
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②
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③
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④
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