The number of refereeing errors in the experimental matches was _______.
举一反三
- The experiment conducted by the researcher was meant to______. A: review the decisions of referees at the 1998 World Cup B: analyse the causes of errors made by football referees C: set a standard for football refereeing D: reexamine the rules for football refereeing
- The difference between the control group and the experimental group was （） A: the training that parents received B: the age of the children C: the books that were read D: the number of the children
- Random Errors are unpredictable. These errors are further classified into ( ). ( ). ( ). A: Instrument noise errors B: Switch repeatability errors C: Connector repeatability errors D: Drift errors
- Which of the following matches is wrong?
- Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches that must occur for every competitor to battle every other competitor（） A: 27 B: 36 C: 45 D: 64 E: 81