为使采样输出信号不失真地代表输入模拟信号，采样频率fs和输入模拟信号的最高频率f1max的关系是（）
A. fs≤f1max
B. fs≥f1max
C. fs≥2f1max
D. fs≤2f1max
查看答案
ADC的二进制位数越多，量化级分得越多，量化误差就可以减小到0。
A. 对
B. 错
患者女性,岁58,左上腹部疼痛,饭后加重,给予胃镜检查,内窥镜的消毒灭菌宜用
A. 2%戊二醛浸泡法
B. 酒精浸泡法
C. 煮沸法
D. 高压蒸汽灭菌法
E. 紫外线照射法
Which is the most important festival in China?
A. The Mid Autumn festival
B. Lantern festival
Children's Day
D. The spring festival
When is the Chinese Spring festival usually celebrated?
A. In March or April
B. In May or June
C. In January or February
D. In December
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