第一级油泵的总体输出压力保持在多少PSI()
A. 2500PSI
B. 2800PSI
C. 3000PSI
D. 3300PSI
________ the news, Ida changed her plans.
A. In hearing
B. To hear
C. Of hearing
D. On hearing
焊接工艺过程卡片主要用于()
A. 单件小批生产的产品示例
B. 批量生产的产品
C. 工序质量控制点
D. 关键工序检查
听录音,回答问题:{MP3:http://wximg.233.com/attached/media/20130529/20130529153125762576.mp3}
A. N0,I don’t.
B. Yes,I don’t.
C. N0,I d0.
D. I don’t like her.