答案查看网,轻松搜题/搜资源
登录
×
登录账号
记住密码
立即注册
忘记密码
×
注册
使用微信扫描二维码,获取账号密码后免费查看答案
前往登录
忘记密码
×
忘记密码
使用微信扫描下方二维码,即可找回您的账号密码
前往登录
立即注册
搜题/搜资源
【单选题】【消耗次数:1】
If my lawyer ___ here last Saturday, he ___ me from going.
①
had been; would have prevented
②
had been; would prevent
③
were; would prevent
④
were; would have prevented
参考答案:
复制
纠错
➡️如需代学继续教育,请点击这里
相关题目
【单选题】
If the whole program __________ beforehand, a great deal of time and money would have been lost.
①
was not planned
②
were not planned
③
would not be planned
④
had not been planned
查看完整题目与答案
【单选题】
If I had remembered __________ the window, the thief would not have got in.
①
to close
②
closing
③
to have closed
④
having closed
查看完整题目与答案
【单选题】
The millions of circulations involved, _____ by hand, would have lost all practical value by the time they were finished.
①
had they been done
②
they had been done
③
having been done
④
they were done
查看完整题目与答案
【单选题】
The millions of calculations involved, ____ by hand, would have lost all practical value by the time they were finished.
①
had they been done
②
they had been done
③
having been done
④
they were done
查看完整题目与答案
【单选题】
The millions of circulations involved, _____ by hand, would have lost all practical value by the time they were finished.
①
had they been done
②
they had been done
③
having been done
④
they were done
查看完整题目与答案
【单选题】
I had to complete the assignment by Friday [] otherwise, I would have failed the course.
①
comma
②
semicolon
查看完整题目与答案
【单选题】
If he_____the storekeepers scissors,he would have forgotten to buy a pair.
①
would not see
②
had not seen
③
having not seen
④
has not seen
查看完整题目与答案
【单选题】
____ the English examination, I would have gone to the concert last Sunday.
①
In spite of
②
But for
③
Because of
④
As for
查看完整题目与答案
【单选题】
_______ the English examination, I would have gone to the concert last Sunday.
①
In spite of
②
But for
③
Because of
④
As for
查看完整题目与答案
【单选题】
We are going to have a dancing party tonight. Would you like to join us?
①
I’m afraid not. Because I have an appointment with my dentist tonight
②
Of course not. I have no idea
③
No, I can’t
④
That’s all set
查看完整题目与答案
随机题目
【单选题】
PROFIBUS一DP是一种为速度而优化的协议,它是为了在PLC((I)主站)和分布式 I / 0(IDP从站)之间的通信而特别设计的。(
①
正确
②
错误
查看完整题目与答案
【单选题】
工控机应用系统比PLC应用系统可靠性较高。(
①
正确
②
错误
查看完整题目与答案
【单选题】
工业以太网(Industrial Ethernet)的每个PLC上都装有一个以太网模板CP,他们的作用是进行PLC之间的通信。 ( )
①
正确
②
错误
查看完整题目与答案
【单选题】
S7提供各种不同的组织块,这些组织块分有优先级,允许较低优先级的组织块中断较高优先级的组织块。(
①
正确
②
错误
查看完整题目与答案
【单选题】
PLC的扫描周期仅取决于CPU模板的运算速度。(
①
正确
②
错误
查看完整题目与答案
【单选题】
可编程控制系统的控制功能必须通过修改控制器件和接线来实现。( )
①
正确
②
错误
查看完整题目与答案
【单选题】
在S7-300中,定时器区为512Byte,最多允许使用512个定时器。 ( )
①
正确
②
错误
查看完整题目与答案
【单选题】
PLC的输人和输出量有开关量和模拟量两种。开关量I/ 0用最大I/ 0点数表示,模拟量I/ 0点数用最大I / 0通道数表示。( )
①
正确
②
错误
查看完整题目与答案
【单选题】
在可编程序控制器中,节点在程序中可不受限制地使用。(
①
正确
②
错误
查看完整题目与答案
【单选题】
PLC的扫描周期仅取决于CPU模板的运算速度。 ( )
①
正确
②
错误
查看完整题目与答案