【单选题】Don’t let ruin your holiday. A. bad experience B . a bad experience C. bad experienced D. a experience
【单选题】盾构始发掘进前,下列说法错误的是:( ).
A.
盾构始发掘进前应对洞门经过改进的土体进行质量检查,合格后方可始发掘进。
B.
应制定洞门围护结构的破除方案,采取适当的密封措施,保证始发安全。
【单选题】He is a success as a leader but he hasn't _______ in teaching. A. many experiences B. much experience C. an experience D. a lot experience
【单选题】But too much of that lengthened experience,even in the wealthy West,will be experience of poverty and neglect,______we do something about it.
【单选题】在二维变换中,比例变换矩阵中( )会导致变换后的图形发生变形。
【单选题】关于Python程序中多行注释的说法中,不正确的是____。