Freeing ports on a vessel with solid bulwarks ______.A.prevent stress concentration in the

The most frequent cause of fires aboard tankers is due to ______．

A.Improper gas freeing

B.Leaking of cargo pump glands

C.Tobacco smoking

D.Spontaneous combustion

A.Starting the disengaged windlass at high speed

B.Rigging a bull rope to pull it out

C.To grease the hawsepipe

D.To pry it loose with a short piece of pipe

Which one is not true about Apple according to the article？

A.They build products that extend human capability, freeing people from drudgery and helping them achieve more than they could alone.

B.They expect individual commitment and performance above the standard for our industry.

C.They believe that they don’t need to own and control the primary technologies behind the products they make.

D.They believe that we’re on the face of the Earth to make great products, and that’s not changing.

A.n4 ports Enhanced Gigabit Ethernet Combo interface

B.n4 ports Channelized POS STM-1 Board

C.n4 ports Channelized STM-1 Board

D.n4 ports ATM STM-1 Board

The fresh air intake of the inert gas system ______，

A.Prevents the flue gas from falling below 3% content of oxygen

B.Allows the inert gas piping to be used for gas freeing the tanks

C.Opens when there is excessive vacuum on the deck water seal

D.Enables outside air to mix with and cool hot flue gasses

Straight Bills of Lading are those covering shipments between direct ports of loading or discharge.( )

A.UDP ports 161 and 162

B.UDP ports 20 and 21

C.TCP ports 161 and 162

D.TCP ports 20 and 21

The Certificate of pratique shall only have effect in ______.

A.all ports of the issuing country

B.all ports of the world

C.all ports other than a issuing country

D.all ports of ship's arrival

A.for

B.to

C.of

D.in