皮皮学，免费搜题
登录
搜题
【判断题】
数据管理经历了人工管理、 文件系统和数据库系统三个发展阶段。( )A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Most people think of lions as strictly African beasts, but only because they've been killed off almost everywhere else. Ten thousand years ago lions spanned vast sections of the globe, and so did peop...
A.
The lions were on the brink of extinction.
B.
They were suffering from a fatal disease.
C.
They allowed him to see their vitality and charm at close quarters.
D.
Mother lion and her cub shared a deer.
【单选题】住宅建筑间距应符合国家标准的规定，对特定情况还应符合特定规定，下列哪个描述是正确的
A.
老年人居住建筑日照标准不应低于冬至日日照时数2.5h
B.
既有住宅建筑加建电梯，不得使相邻住宅原有日照标准降低
C.
旧区改建项目内新建住宅建筑日照标准不应低于大寒日日照时数1h
D.
公共设施日照标准不低于大寒日2h
【单选题】The police were seeking more information to find out _____ the rich merchant.
A.
who was it that killed
B.
who it was that killed
C.
it was who killed
D.
who was it killed
【单选题】There are about 70 people ______ in the accident.
A.
were killed
B.
who killed
C.
killing
D.
killed
【简答题】在调制技术中将频率调制和相位调制称之为 调制。
【单选题】下列对Java源程序结构中前3种语句的次序，正确的是
A.
import，package，public class
B.
import必为首，其他不限
C.
public class，import，package
D.
package，import，public class
相关题目：