芯样强度检测时检测结果的不确定性源于哪些方面()。
A.系统
B.随机
C.检测操作
D.计算
参考答案:A, B, C
单词拼写。
1. The Beatles were A________.
2. Jim Morrison was a singer and a s________.
3. Jerry Gareia was the l________ of the band The Grateful Dead.
4. It was the first Chinese s_________ with a pilot living and working in it.
5. There was an a________ movie with Jackie Chen.
6. He was the ________ (吉他手) of the famous band.
7. After the Beatles, John Lennon was ________ (成功的) as a solo artist.
8. Many of his songs were about ________ (和平).
9. There were many sections of the ________ (展览).
10. How was the trip to ________ (博物馆)?
以下哪项鉴别葡萄胎和侵葡最可靠()
A.子宫大小
B.血HCG值大小
C. * * 有无转移病灶
D.卵巢有无黄素囊肿
E. * * 流血量多少