举一反三
- Take off your shoes. Take off.
- The ___________(电) is off.
- Ladies and gentlemen,please switch _______ your mobile phones!The plane is taking off. A: over B: on C: to D: off
- Our plane is about to take off. Please ___________ your electronic devices.A. switch on B. switch off C. turn on D. turn down A: switch on B: switch off C: turn on D: turn down
- The woman comes to the police station because The woman comes to the police station because A．Route 23A bus took her to the wrong place. B．she wants to complain about the overcrowded bus. C．she lost her handbag while getting off the bus. D．the bus driver drove off while she was trying to get off. A: Route 23A bus took her to the wrong place. B: she wants to complain about the overcrowded bus. C: she lost her handbag while getting off the bus. D: the bus driver drove off while she was trying to get off.
内容
- 0
He asked, "Where are you toget off, John?"He asked John where _____________ get off. A: was he to B: he was to C: does he to D: would he to
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对下列梯形图描述正确的是（ ）。[img=566x132]1803dc41a37ad5f.png[/img] A: X0状态由OFF变为ON后，Y0得电1秒失电2秒 B: X0状态由OFF变为ON后，Y0得电2秒失电1秒 C: X0状态由OFF变为ON后，Y0的得电时间由T0控制 D: X0状态由OFF变为ON后，Y0的失电时间由T1控制
- 2
对下列梯形图描述正确的是（ ）[img=663x155]1802f27d9925513.png[/img] A: X2状态第一次由OFF变为ON后，M10线圈保持得电 B: X2状态第一次由OFF变为ON后，M11线圈保持得电 C: X2状态第二次由OFF变为ON后，M10线圈保持得电 D: X2状态第二次由OFF变为ON后，M11线圈保持得电
- 3
对下列梯形图描述正确的是（ ）。[img=496x75]1803724919fff46.png[/img] A: X0状态由OFF变为ON后，M6线圈得电一个扫描周期 B: X0状态由OFF变为ON后，M6线圈保持得电 C: X1状态由ON变为OFF后，M8线圈得电一个扫描周期 D: X1状态由OFF变为ON后，M8线圈保持得电
- 4
对下列梯形图描述正确的是（ ）。[img=1308x232]1803dc41b086d6b.png[/img] A: X0状态第一次由OFF变为ON后，M0线圈保持得电 B: X0状态第一次由OFF变为ON后，M1线圈保持得电 C: X0状态第二次由OFF变为ON后，M0线圈保持得电 D: X0状态第二次由OFF变为ON后，M1线圈保持得电