选择题:The foreigners _________there, but they _________t

题目内容:
The foreigners _________there, but they _________the food there at first. ( )(本题3.5分)
A、 used to live, didn’t be used to
B、 are used to living, didn’t use to
C、 used to live , weren’t used to
D、 used to living, usedn’t to
参考答案:

S7-200系列PLC的特殊标志位 可产生占空比为50﹪,周期为1min的脉冲串,称为分脉冲。

S7-200系列PLC的特殊标志位 可产生占空比为50﹪,周期为1min的脉冲串,称为分脉冲。A.SM0.0B.SM0.4C.SM0.1D.SM0.5

查看答案