氢冷发电机轴封油压应大于（）压。
题型：填空题
问题：
氢冷发电机轴封油压应大于（）压。
题型：填空题
| 给句子选择正确的图片。 | ||
| ( ) 1. This animal can climb trees. | A. | |
| ( ) 2. This animal can see at night. | B. | |
| ( ) 3. This animal can swim. | C. | |
| ( ) 4. This animal can run very fast. | D. | |
| ( ) 5. This animal can fly. | E. | |