对于音频信号来说，由于人耳一般所能听到的最高频率是22.05 kHz，所以使失真最小的采样频率确定为________ kHz即可。

未分类题It seems to the author that the implementation of the new regulation would be______.A．successful and rapidB．necessary and smoothC．effective but gradualD．important but difficult

未分类题Which of the following would be the best title of the passage?A．Reform. in Airline IndustryB．The Hidden Costs of FlyingC．Dispute Between Airlines and RegulatorsD．Pricing Mechanism of American Airlines

未分类题It is indicated in Paragraphs 1 and 2 that______.A．the way for customers to pay is still limited so farB．several big retailers are planning to incorporateC．the name of the new network may be changedD．compatibility of the payment system is satisfactory

未分类题The core of disagreement between regulators and airlines is______.A．how much airlines should charge for extra feesB．how many charging items should airlines setC．how often should airlines improve the fee disclosureD．how open airlines should be about the pricing system

判断题手持应变仪常用于现场测量，适用于冲击试验。( )