咨询量300A.70%B.80%C.90%D.60%

case函数的格式正确的是（ ） A: case(depth<=70 "Shallow" depth>70 AND depth<=300 "Mid" depth>300 "Deep") B: case(depth<=70, "Shallow", depth>70 AND depth<=300, "Mid", depth>300, "Deep") C: case(depth<=70, "Shallow", depth>70 && depth<=300, "Mid", depth>300, "Deep") D: case(depth<=70, "Shallow", depth>70 && depth<=300, "Mid", depth>300, "Deep")

这个公司有高级工程师30人,工程师70人,工人200人,共有职工300人。 A: This company has 30 senior engineers, 70 engineers, and 200 workers, a staff of 300 people. B: This company has a staff of 300 people, 30 senior engineers, 70 engineers, and 200 workers. C: This company has a staff of 300 people, including 30 senior engineers, 70 engineers, and 200 workers. D: This company includes 30 senior engineers, 70 engineers, and 200 workers, having a staff of 300 people.

成教云: 震源深度在（70～300）km的地震为（ ）

团的基层代表大会的代表名额一般为（）至（）人，最多不超过（）人。 A: 30；50；70 B: 50；70；90 C: 100；200；300 D: 200；300；500

浅源地震的深度是（ ）？ A: 70～300km B: 0～70km C: 300～720km

地震深度分类标准如下。 depth£70 km，地震是浅震（shallow ea..., depth>300, 'Deep')

过去 300 年里，发达国家占世界所有国家的比例低于 30%，发展中国家占比超过 70%。

如果只做一个网页，图像分辨率应该设置为多少？ A: 300 B: 150 C: 72 D: 70

乒乓球在中国有多少年的历史？ A: 70多年 B: 90多年 C: 100多年 D: 300多年