【单选题】Peter, you drank so much last night. You _______ if I remember correctly.
【单选题】Turn ____ at the end of the street. If I remember ____, there's a train at six o'clock.
【判断题】( )PLC的输入、输出接口电路一般采用光电耦合器来传递信号,这样可抑制外部干扰源对PLC的影响。
【单选题】If I remember correctly, you were supposed _____ the keys on your way here. [ ]
【单选题】在寂静的教室里窃窃私语也能引起我们的注意,这种客观原因属于( )
【简答题】If I remember _____, there's a train at six o'clock.
【单选题】If I remember ____, there's a train at six o'clock.
【单选题】If I remember ______, there is a train at six o'clock.
【单选题】If I remember correctly, _______was ten years ago that your brother went to Canada.