built up propeller
solid propeller
controllable pitch propeller
suction back propeller
第1题：
Vessel propellers are classified as being right hand or left hand.A right hand propeller turns clockwise when viewed from______.
A.the bow
B.the stern
C.the port side
D.the starboard side
第2题：
On a vessel with a single propeller，transverse force has the most effect on the vessel when the engine is put ______．
A.full ahead
B.full astern
C.half ahead
D.slow astern
第3题：
When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?
A.The propeller hub taper and shaft keyway should be inspected for cracks or corrosion
B.The stern bearing alignment with the stern frame should be checked
C.The interior of the stern tube should be inspected for leaks
D.The shaft liner should be removed and inspected for cracks
第4题：
straight
to port
to starboard
None of the above
第5题：
螺旋桨有四个桨叶。 （）
第6题：
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?
A.When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may result
B.When going directly from full ahead to full astern，there is complete steering control
C.When the vessel has headway and the propeller is in neutral，there is no effect on rudder control
D.When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM
第7题：
When an MPLS Layer 2 VPN runs in the hub-and-spoke model， where is QoS implemented？（）
第8题：
_____ of the controllable pitch propeller enables the blades to be moved to change the pitch angle
A.An external mechanism
B.An internal mechanism
C.An interlock device
D.A hunting gear system
第9题：
Which two statements are true regarding an Ethernet collision domain?（）
第10题：
Ⅰ + Ⅱ
Ⅰ ~ Ⅲ
Ⅰ ~ Ⅳ
Ⅰ + Ⅱ + Ⅳ