【单选题】关于螺杆与螺孔装配图的画法,哪一种判断是正确的?
【多选题】How the questions in a questionnaire should be designed?
A.
Ask “closed questions” if you expect unique or elaborated answers.
B.
Ask “open questions” if you expect unique or elaborated answers.
C.
Ask “closed questions” if you want to standardize the answers so that they can be easily calculated or compared.
D.
Ask “open questions” if you want to standardize the answers so that they can be easily calculated or compared.
【单选题】关于螺杆与螺孔装配图的画法,哪一种判断是正确的?【图片】
【多选题】The principle for what questions should be used in a questionnaire is “relevance,” which means:
A.
Every question in the questionnaire should help you answer the research questions of your study.
B.
Irrelevant questions should be left out.
C.
Questions about name, gender, age, and marital status should not be included unless you do need the information for ysis.
D.
You should know exactly what specific information you need to collect.
【单选题】What helps a person to do a particular task better in visual perceptual learning?
【单选题】为研究胃溃疡病与饮酒的关系,某大夫调查了100名胃溃疡病人的饮酒史和100名胃炎病人的饮酒史。根据以上资料,该研究的主要缺陷是()。
【单选题】为研究胃溃疡病与饮酒的关系,某大夫调查了100名胃溃疡病人的饮酒史和100名胃炎病人的饮酒史,这是属于()。
【单选题】关于螺杆与螺孔装配图的画法,哪一种判断是正确的?
【单选题】__________ ,I should ask them some questions.
A.
Should they come to us
【单选题】On what day is the Christmas Day?