只能反映出风对船舶速度的影响而无法反映水流对船速的影响的计程仪为()。
A.电磁计程仪
B.绝对计程仪
C.声相关计程仪
D.多普勒计程仪
参考答案:A
单词拼写。根据下列句子及所给汉语注释,写出空缺处各单词的正确形式(每空只写一词)
1. On _______ (平均), people who don't smoke are healthier than people who do.
2. For a goalkeeper, it's a great _______ (优势) to have big hands.
3. Many of his finest pictures are _______ (悬挂) in the national museum.
4. Sydney wants to become a _______ (律师) in the future.
5. He ______ (按下) the button and the doorbell rang.
6. Farmers are reporting a very big _______ (收成) this year.
7. I washed and _______ (剃须), then hurried out of the house.
8. John missed the game because of _______ (胃) pains.
9. Callie will start ______ (幼儿园) in September.
10. The old lady needs a few feather _______ (枕头) to make herself comfortable.
在心包炎症渗出初期最主要的体征是()
A.Ewart征
B.心尖搏动减弱
C.奇脉
D.心音弱而遥远
E.心包摩擦音