个人信用信息基础数据库尚未采集国家助学贷款信息。
参考答案：错
"Where's your brother, Jane?" "He's not in Guiyang these days. He________ Beijing.'
A. has gone to B. has been to C. had been to
试水膏在检水尺上停留5～20s的示值变化不超过（）。
A、0.2mm
B、0.3mm
C、0.5mm
D、0.5mm
