皮皮学，免费搜题
登录
搜题
【单选题】
当肌肉受到一次阈上刺激时出现:A.
一次单收缩
B.
一连串单收缩
C.
不完全收缩
D.
完全收缩
E.
无收缩反应
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】分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供( )。
A.
数据处理服务
B.
资源共享服务；
C.
数据通信服务；
D.
多方面的服务；
E.
数据处理和资源共享服务。
【单选题】1-25.分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供( )。
A.
(1)数据处理服务;
B.
(2)资源共享服务;
C.
(3)数据通信服务;
D.
(4)多方面的服务;
E.
(5)数据处理和资源共享服务。
【单选题】why are new college students most likely to get addicted to the Internet
A.
Because colleges provide Internet access 24 hours a day
B.
Because they are not watched by their parents when at college
C.
Because they need to use the Internet to keep in touch with their friends
D.
Because they are so homesick that they spend all their spare time online
【单选题】分时系统和实时系统都具有交互性,分时系统的交互性允许用户请求系统提供多方面的 服务,实时系统的交互性允许用户访问()。
A.
文字编辑程序
B.
专用服务程序
C.
专用硬件
D.
数据处理程序
【单选题】Why are new college students most likely to get addicted to the Internet?
A.
Because colleges provide Internet access 24 hours a day.
B.
Because they are not watched by their parents when at college.
C.
Because they need to use the Internet to keep in touch with their friends
D.
Because they are so homesick that they spend all their time online
【简答题】写出下列单词的 元音音标 leave [ ]
【简答题】Why Rent Textbooks? Textbook renting is now a new fashion among college students. 小题1: Let’s examine carefully further and see why renting books is a cost-effective way without shelling too much money...
【单选题】Why are new college students most likely to get addicted to the Internet?
A.
Because colleges provide Internet access 24 hours a day.
B.
Because they are not watched by their parents when at college.
C.
Because they need to use the Internet to keep in touch with their friends.
D.
Because they are so homesick that they spend all their spare time online.
相关题目：