110kV及66kV变压器油中溶解气体分析周期为()月。
A.1
B.3
C.6
D.12
参考答案:D
鼻咽后外侧结构为()
A.鼻腔
B.咽隐窝
C.椎前间隙
D.舌骨
E.甲状软骨
1.I can't find my books. They are________ (miss).
2.What's_______( happen) to them?
3.They were walking________ ( slowly) than us.
4.1 can hear someone______( cry) now.
5. Where have you______( be) ,Mr. Wang?
6.1 think he has_________( break) his leg.
7.He is ( lie) on the ground.
8.We had better _______( get) you to the hospital.
9.They decide ______( go) and look for the little girl.