flame temperature
fuel oil
air movement
gas forces
第1题：
was hold up on my way back. Just before I________ 79
第2题：
Connecting elements of a mooring system should be fabricated from ______.
A.cast iron
B.forged steel
C.stainless steel
D.cast steel
第3题：
58. Which is the correct way to act in an earthquake?
A. Run downstairs and cover your head and neck with your arms.
B. Drive your car quickly through the overpass and get out of it.
C. When you stay under a strong piece of furniture, you should hold on to it and be prepared to move with it.
D. Climb over the back of the seat and cover your head and neck with your arms.
第4题：
Most propellers on merchant vessels are constructed of______．
A.manganese bronze
B.cast iron
C.mild steel
D.improved plow steel
第5题：
______ is the most liable to spontaneous combustion．
A.Cement
B.Chinaware
C.Fish meal
D.Steel products
第6题：
The cylinder liners are made of _____ and the cylinder surfaces are sometimes chromium-plated.
A.steel
B.copper
C.cast iron
D.stainless steel
第7题：
A vessel is not in every way fitted for cargo service ______ at the time of her delivery to the charterers her engine room staff is incompetent and inadequate，and accordingly she is unseaworthy．
A.whether
B.should
C.shall
D.if
第8题：
was hold up on my way back. Just before I 79
第9题：
What is acceptable flame screening ________．
A.A fitted single brass screen of 10 x 10 mesh
B.A fitted stainless steel screen of 30 x 30 mesh
C.A fitted single stainless steel screen of 15 x 15 mesh
D.Two fitted brass screens of 10 x 15 mesh spaced 1/2 inch apart
第10题：
paint thinner in an open can
fuel accumulation in the bilge
oily rags in an unvented compartment
gasoline stored in steel drums