艺术体验
焊缝焊完或焊后热处理完毕后,应采取保温措施并使焊缝缓慢冷却,其冷却速度不应大于()。 A.5℃/min 。 B.10℃/min 。 C.15℃/min 。 D.20℃/min。
You work as an application developer at Certkiller .com. Certkiller .com has instructed you to create a class named MetricFormula. This class will be used to compare MetricUnit and EnglishUnit objects.The MetricFormula is currently defined as follows (Line numbers are used for reference purposes only): 1. public class MetricFormula2. { 3. 4. } You need to ensure that the MetricFormula class can be used to compare the required objects. What should you do? () Add the following code on line 1: : IComparable {。 Add the following code on line 1: : IComparer {。 Add the following code on line 3: public int Compare (object x, object y) {// implementation code }。 Add the following code on line 3: public int CompareTo (object obj) {// implementation code }。
动物对低温环境的适应常表现在()、()和()
简述文学审美认识功能。
若某只封闭式基金的单位净值为1.168元,交易价格为0.845元,则其折价率为()