在一个程序中不能使用()检查纠正的方法。
A、梯形图
B、双线圈
C、上电
D、指令表
参考答案:C
—That little boat is ______ safe. Don't you think so, Tom?
—No worries! I've been on this boat for dozens of times. [ ]
A. something but
B. nothing but
C. anything but
D. everything but
培训教学管理体系由人员系统和物质系统两方面构成的。