灰分大于20%的原煤,火车、汽车煤基本采样单元最小子样数规定为()个。
A.20
B.60
C.30
参考答案:B
阅读课文,根据短文内容判断正 ( T)误 ( F)。
Do you know Jay Chou? He is a very famous popular singer. When he was young, he was shy. He didn't study well at school, and his mother often worried (担心) about his futurec (将来). From then on he was
interested in music. In 2000 he became a singer. Manyfans like Jay and his special style of R&B.They love
his music. He was released three albums. Ye Huimei is the new one. All the music in his album is made by
himself. Some of the lyrics are written by himself, too.
( ) 1. Jay is a famous basketball player.
( ) 2. His special style is R&B.
( ) 3. He liked studying when he was young.
( ) 4. His new album is Ye Huimei.
( ) 5. He can't write lyrics.
最常见的肛管直肠周围脓肿是
A.肛周脓肿B.坐骨直肠窝脓肿C.骨盆直肠脓肿D.直肠后窝脓肿E.高位肌间脓肿