周卫报告中简述教师学习特点？
You need to display the last names of those employees who have the letter "A" as the second character in their names. Which SQL statement displays the required results? （） SELECT last_name FROM EMP WHERE last_ name LIKE '_A%';。 SELECT last_name FROM EMP WHERE last name ='*A%'。 SELECT last_name FROM EMP WHERE last name ='_A%';。 SELECT last_name FROM EMP WHERE last name LIKE '*A%'。
用人单位未按时足额缴纳社会保险费的，由社会保险费征收机构责令其限期缴纳或者补足。
霍夫曼比例是指（） A.消费品工业净产值与资本品工业净产值的比例 。 B.供给与需求的比例 。 C.轻工业品净产值与重工业品净产值的比例 。 D.以上都对。
An IT director is eager to adopt POWER7 servers because of their relative performance ratings and energy efficiency， but is concerned about migrating applications which require AIX 5.3. Which of the following will address his concern？（） POWER7 servers running AIX 5.3 operate in POWER5+ mode.。 POWER7 servers running AIX 5.3 operate in POWER6 and POWER6+ mode.。 POWER7 servers running AIX 5.3 operate in POWER5 and POWER6 modes.。 POWER7 servers running AIX 5.3 operate in POWER6 and POWER7 modes.。
克什米尔冲突之所以在国际社会引起广泛关注，是因为（）。①世界人民渴望和平．反对战争②发展经济是维护和平的有力保障③和平是人类生存与发展的基本条件④维护和平才能为经济发展创造良好的国际环境
