【单选题】查询计算机应用技术专业成绩在80分(包含)以上的学生人数,正确的语句是?A.db.students.find({"major":"计算机应用技术","score":{$gt:80}}).count()B.db.students.find({"major":"计算机应用技术","score":{$gte:80}}).count()C.db.students.find({"major":"计算机应用技术","score":{$gte:80}})D.db.students.find({$or:[{"major":"计算机应用技术"},{"score":{$gte:80}}]}).count()
【单选题】查询计算机应用技术专业成绩在80分(包含)以上的学生人数,正确的语句是?
A.db.students.find({"major":"计算机应用技术","score":{$gt:80}}).count()
B.db.students.find({"major":"计算机应用技术","score":{$gte:80}}).count()
C.db.students.find({"major":"计算机应用技术","score":{$gte:80}})
D.db.students.find({$or:[{"major":"计算机应用技术"},{"score":{$gte:80}}]}).count()
参考答案和解析
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