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【简答题】
舱门关后 Ladies and Gentlemen: The cabin door is 1. . For your 2. , please do not use your mobile 3. and certain electronic devices on board at any time. Laptop 4. may not be used during 5. and 6. . 7. ensure that your mobile phone is turned off. This is a 8. flight, please do not smoke on board. 9. you for your 10. .
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皮皮学刷刷变学霸
举一反三
【简答题】手臂的动作是机械手的主要运动,机械手的工作空间范围和运送工件时的行进路线主要由手臂动作决定。根据手臂运动形式的不同,机械手可分为四种坐标形式;()、圆柱坐标式、极坐标式和多关节式。
【单选题】-Why didn’t you go to the party ? _______ an invitation, I would have gone to the party .
A.
Had I received
B.
If I received
C.
If I should receive
D.
Were I to receive
【单选题】---You didn’t come to the party yesterday? ---_______ ? I’m not a party animal.
A.
How can I have
B.
How would I have
C.
Why should I have
D.
Why must I have
【简答题】子网掩码255.255.255.0代表什么意思?如果某一网络的子网掩码为255.255.255.128,那该网络能够连接多少台主机?
【单选题】—Are you going to Mary’s birthday party, Jack? —I’d love to, but I _______ to come to her party.
A.
was told
B.
told
C.
wasn’t told
D.
didn’t tell
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