柴油的预喷技术可以降低发动机的工作和怠速(),可以实现多次喷射。
A.噪声
B.温度
C.振动
D.泄漏
参考答案:A
原发性肝癌小于2cm时,下列哪种方法可获得定位诊断()
A.B超检查
B.选择性腹腔动脉造影
C.放射性核素肝扫描
D.肝穿刺活检
E.血清γ-GT
用括号中所给词的适当形式填空。
1. I like ______ (China) action movies.
2. Beijing Opera is ______ (real) fun!
3. The story is very ______ (interest).
4. The map is on the wall of ______ (they) mother's room.
5. Please come in and have a cup of tea with ______ (we).
6. Can you tell ______ (I) a story?
7. There are many ______ (desk) and a chair in the classroom.
8. Tom Green is an ______ (art).
9. The boy is ten ______ (year) old.
10. My birthday is June ______ (five).