【单选题】局部优化是局限于一个( )范围内的一种优化。
【单选题】甲、乙两根钢棒,若用甲棒的 A1 端靠近乙棒的 A2 端时,有吸引作用;若用甲棒的 A1 端靠近乙棒的中部时没有吸引作用。关于这两根钢棒,以下说法中正确的是
【单选题】Don’t leave anything the walkways and stairs. It’s dangerous.
【单选题】如图所示,甲、乙两根钢棒,若用甲棒的A 1 端靠近乙棒的A 2 端时,有吸引作用;若用甲棒的A 1 端靠近乙棒的中部时没有吸引作用。关于这两根钢棒,以下说法中正确的是 [ ]
【单选题】Dry the floor, don’t leave it wet. Don’t leave anything in the way of the walkways and stairs. Report any damaged equipment as soon as possible. This is an excerpt from __________.
B.
a company meeting on marketing
C.
a training course given to new employees
【单选题】React __________when it comes to your studies, don’t leave anything to last minute.