【单选题】He wanted to make sure __________.
A.
how we went there by bus
【简答题】A.He hated spiders. B.He wanted to do some research on the web. C.He just wanted to while away the time. D.He wanted to catch the spider.
【判断题】绿篱都是由常绿灌木或常绿小乔木树种组成的。
【单选题】设 ABC 表有三列 A 、 B 、 C ,并且都是整数类型,则以下( )查询语句能够按照 B 列进行分组,并在每一组中取 C 的平均值。
A.
SELECT AVG (C)FROM ABC
B.
SELECT AVG (C)FROM ABC ORDER BY B
C.
SELECT AVG (C)FROM ABC GROUP BY B
D.
SELECT AVG (C)FROM ABC GROUP BY C,B
【判断题】绿篱都是由常绿灌木或常绿小乔木树种组成的。
【单选题】He wanted to measure temperatures. He wanted to _____ them.
【单选题】男性,65岁。患高血压10余年,神志不清,左侧肢体瘫痪2小时来院急诊。检查:血压200/120mmHg。诊断为高血压病合并脑血管意外。此时降压治疗应将血压降为
【简答题】A.He wanted the railroad to be successful. B.He wanted to have a more powerful steam engine. C.He wanted to own the land near the railroad. D.He wanted to build his own railroads.