【单选题】We have our skill-training classes in a factory
【单选题】Speaker A: __________________ Speaker B: We have English, math and skill training classes.
A.
What subjects do you have?
B.
How many classes do you have?
C.
What classes do you like?
【单选题】We have skill-training classes in a factory.
【判断题】蓄电池主要用于启动供电及发电机发电不足或过载时供电( )
【判断题】两性花是进化的性状,而单性花是原始的性状。( )