Yes: Influenza b virus is a respiratory virus spread by coughing, etc. The two main types of influenza occurring during flu season are influenza a and influenza b. Influenza b often causes more GI symptoms.
Excavators are vehicles that are used on construction sites to move material. 1  slide 1 of 2. Excavators: Also Known as Diggers and Backhoes An excavator uses hydraulics or a wire rope pulley system to dig holes or trenches and is, therefore, often called a digger. 2  slide 2 of 2. Examples of Excavators.
1 A mini excavator consists of a cab, engine, dual rubber or steel track undercarriage, a boom arm, and an attachment. The cab, where the operator sits, can pivot 360Â° on top of the tracks.  The diesel engine provides propulsion power for the tracks and powers the hydraulic systems that do the digging.