We use ________ when proceeding in dense fog
A.auto-steering
B.gyro-pilot
C.rudder gear
D.hand-steering
第1题:
A.When-Mouse-Up
B.When-Mouse-Move
C.When-Mouse-Down
D.When-Mouse-Click
E.When-Mouse-Leave
第2题:
在工资.DBF第4条记录后插入一条空白记录的命令是______。
A.USE 工资 GO4 INSERT BEFORE
B.USE工资 GO4 INSERT BLANK
C.USE工资 SKIP 4 INSERT BEFORE
D.USE工资 SKIP INSERT BEFORE
第3题:
计划的主要内容包括______,计划必须清楚地确定和描述这些内容。
A.What, Why, Who, Where, When, How many, How much
B.What, Why, We, Where, When, How to, How much
C.What, Why, We, Where, When, How, How much
D.What, Why, Who, Where, When, How, How much
第4题:
A、We ; us
B、Us ; we
C、We ; our
D、We ; we
第5题:
计划的主要内容包括______计划必须清楚的确定和描述这些内容。
A.What,Why,Who,Where,When,How many,How much
B.What,Why,We,Where,When,How to,How much
C.What,Why,We,Where,When,How,How much
D.What,Why,Who,Where,When,How,How much
第6题:
查询学生的总成绩,并进行排名,总分重复时不保留名次空缺 SELECT sc.SId, DENSE_RANK() OVER(ORDER BY sum(sc.score) DESC)排名, sum(sc.score) as sumscore FROM sc GROUP BY sc.SId ORDER BY sumscore DESC;