MCQOPTIONS
 Saved Bookmarks
				| 1. | 
                                    The disease of dry rot in timber is caused by | 
                            
| A. | ack of ventilation | 
| B. | lternate wet and dry conditions | 
| C. | omplete submergence in water | 
| D. | one of the above | 
| Answer» B. lternate wet and dry conditions | |