皮皮学，免费搜题
登录
搜题
【单选题】
反映测验所得结果的可靠性和稳定性,指的是测量工具的 ( )A.
效度
B.
难度
C.
信度
D.
区分度
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
【简答题】带传动在过载时产生打滑,可防止损坏零件,起 ____作用,但不能保证准确的传动比 。
【简答题】阅读理解 How much sleep do we need? People are all different. Some people need only three or four hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep seven to eight hours ...
【简答题】带传动在过载时产生打滑,可防止损坏零件,起 作用,但不能保证 。
【简答题】How much sleep do we need? People are all different. Some people need only three or four hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep seven to eight hours a nig...
【单选题】平带传送的使用特点在过载时可产生（），能防止薄弱零部件的损坏，起到（）作用，但不能保持准确的传动比。
A.
打滑、安全保护
B.
涨紧、安全保护
C.
打滑、制动
D.
涨紧、制动
【简答题】Imagine going to your doctor with a complaint of frequent headaches.Your doctor takes a prescription andwrites a word on it. The word isn ’t “ aspirin ”, it ’s “ Mozart ”. The idea is not so far-fetch...
【简答题】How much sleep do we need? We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average (平均值) of seven to eight hou...
相关题目：