配电室内的配电柜正面的操作通道宽度，单列布置不小于＿m。A.0.8 B.1．0 C.

                       I                                                         
( )1. What's in the room?                  
(     )2. Is that Jeff?                         
(     )3. Are these your grandparents?          .
(     )4. Where's my pencil case?             
(     )5. Are your books on the sofa?          
(     )6. Is the computer on the desk?         
(     )7. Who is your friend?                  
(     )8. What's this in English?                
(     )9. Is that boy your brother?              
(     )10. Where's my baseball?              

                           II
A. Your baseball? I don't know.
B. Yes, they are.
C. No, they are in the backpack. 
D. It's on the desk.
E. No, it's Jack.
F. Yes, it is.
G. No, it's my cousin.
H. There aresome things in it.
I. Mike.
J. It's a clock.