Excel2003中,若选定多个不连续的行所用的键是()。
A.Shift+所选行
B.Ctrl+所选行
C.Alt+所选行
D.Shift+Ctrl+所选行
参考答案:B
His grandfather _______ for thirty years. [ ]
A. died
B. was head
C. has been dead
D. has died
用量规检验孔的直线度误差,量规能通过的零件的直线度误差()。
A、合格
B、不合格
C、不能确定