在Visual FoxPro数据库的表之间可建立永久联系和 ______ 联系。
A．长期
B．临时
C．短期
D．永无
参考答案：B
JT-C机车信号主机，接收3060新标准UM71制式，主机板如何设置（）.
A.F短路、J、Z、G断开
B.F断开、J、Z、G短路
C.J、Z、G、F短路
D.Z、G、F断开
— We must start out early, _____ possible traffic delay.
— Yes, we can easily _____ in it.
[ ]
A. allow for; get struck
B. allowing for; get struck
C. allow for; get stuck
D. allowing for; get stuck
