在镗床的主轴镗削径向内槽时,关键是先要解决()的问题。
A.横向进
B.径向进给
C.纵向进给
参考答案:B
单词拼写
1. How long can you________(保持平衡) on one leg?
2. The decision was made in my________(缺席).
3. The prisoner will be at________(自由) next month.
4. He has got used to the________(乡村的) way of life.
5. These________(人造的) flowers are very beautiful.
6. Please________(传达) my best wishes to your family.
7. His actions were based on a false________(假设).
8. There is a limit to what one person can________(容忍).
9. He________(捐献) much money to charity to help those homeless children.
10. She can't keep her room in a state of________(混乱).
患者,女,28岁,因心悸,气急,胸闷半个月入院。病前2周曾有发热,腹泻史。体检:肺部无啰音,心界向左明显扩大,HR108/ min,律齐,第一心音减低,心尖可闻及2/6级收缩期杂音,ESR 40mm/h,抗“O”阴性,CK360U,心电图示窦性心动过速,一度房室传导阻滞,心肌损害。本病例可初步诊断为
A.风湿性心肌炎
B.病毒性心肌炎
C.扩张型心肌病
D.急性心包炎
E.先天性心脏病