A propeller of 5.65m in diameter, having a mean pitch of 4.88m, turning at 72 rpm, at a sp

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

The cubic inch（or liter) displacement of a cylinder is determined by the diameter of the p

The room is about ______ in diameter as the hall.A．one－third as largeB．as one－third largeC

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

The lower end of each piston rod is reduced in diameter to fit a bore in _____.A.the cross

Who are those victims in the attacks？A．Worshipers of Shiite Muslim.B．Worshipers of Sunni M