东风7C型内燃机车的轴箱拉杆长短芯轴两端为V形，其斜度为（）。
A、1：3
B、1：5
C、1：10
D、1：12
参考答案：C
She doesn't want to fall behind others. She's _____ to catch up with his classmates. [ ]
A. decide
B. make a decision
C. made a decision
什么叫质量检验？
