【简答题】In the left-hand column below is a partially blank outline from a speech about robots. In the right-hand column, arranged in random order, are the nine sentences to fill in the outline. Choose the app...
【简答题】Skim the text for the key points and fill in the outline with necessary information Presenting Your Products I.Introduction Knowing____ 1 is the most important in presenting products. II.Creating a co...
【简答题】为测定某音叉 C 的频率,选取频率已知且与 C 接近的另两个音叉 A 和 B ,已知 A 的频率为 800 Hz , B 的频率是 797 Hz ,进行下面试验: 第一步:使音叉 A 和 C 同时振动,测得拍频为每秒 2 次。 第二步:使音叉 B 和 C 同时振动,测得拍频为每秒 5 次。 由此可确定音叉 C 的频率为 __________ Hz 。
【简答题】Listen to the recording and fill in the outline. Natural Resources Natural resources refer to 1 Classification of natural resources: On the basis of 2 , resources can be classified into biotic resourc...