Lesson 6 短听力选择-5听一遍,选择正确答案
A. 54
B. 55
C. 40
D. 15
2019级《阶梯轴、齿形链片结合量精度检测》实验报告,格式要求PDF版,文件名样式:“学号+姓名+班号+实验名称”。例如:14190101+王某某+141901+阶梯轴、齿形链片结合量精度检测
Lesson 9 900句填空-1 Climbing to FL290, to be ______
Lesson 9 900句填空-2 Climb to FL280 ______ until ______