When the propeller blades are integral with the hub, the propeller is called a _____.A.bui

When viewed from astern, if the propeller revolves in a clockwise direction when going ahead, it is known as _____.

A variable pitch propeller is made _____ a boss with separate blades mounted into it.

The garden will look very beautiful when all the plants are in flower.（英译中)

When permits for the discharge of chemicals into a waterway are issued, they are issued in

The propeller consists of a ______ with several blades of helicoidal form. attached to it.

What does the passage suggest to people when they are not living in a country where the la