【简答题】A.guesswork B.network C.cyberspace D.info-tech
【判断题】隧道主体建筑物是由洞身衬砌和洞门组成的。
【单选题】The following SAS program is submitted:data WORK.DATE_INFO;X="01Jan1960" D ; run;Variable X contains what value?
B.
the character value "01Jan1960"
C.
the date value 01011960
D.
the code contains a syntax error and does not execute.
【单选题】The 100-page-long leaflet the man speaker got at Oslo Airport contains ______.
A.
funny information about restaurants
B.
quite boring information about restaurants
C.
totally useless information about restaurants
D.
insufficient information about restaurants
【单选题】现有员工信息列表查询,并把结果保存到数组$emp_info[]中,则语句 if(!empty($emp_info)) 的作用是: