Hydraulic oil
Lubricating oil
Diesel oil
Refrigeration oil
第1题:
A.flash point
B.fire point
C.upper explosive limit
D.lower explosive hmlt
第2题:
The flash point of a petroleum product is an indication of its ______.
A.viscosity
B.pour point
C.volatility
D.lower explosive limit
第3题:
(b) Explain the meaning of the term ‘Efficient Market Hypothesis’ and discuss the implications for a company if
the stock market on which it is listed has been found to be semi-strong form. efficient. (9 marks)
第4题:
Before welding can be done in a tank that has carried petroleum products,a certificate must be obtained from ______.
A.the customs
B.the Register Bureau of shipping
C.the shipyard fire department
D.a certified gas chemist
第5题:
Which of the problems listed could cause erosion of the expansion valve disks and seats?
A.Overcharging the system with refrigerant
B.Faulty compressor suction valve
C.Failure of the high pressure cutout
D.Flash gas formed in the liquid line
第6题:
A.Switch A ,because it has the lowest MAC address
B.Switch C,because it has the lowest priority
C.Switch B,because it has the highest MAC address
D.Switch C,because it is the most centrally located switch
E.Switch A,because it is the most centrally located switch
F.Switch D,because it has the highest priority
第7题:
Before welding can be done in a tank that has previously carried petroleum products,a certificate must be obtained from ________ .
A.the customs
B.the Register Bureau of shipping
C.the shipyard fire department
D.a certified gas chemist
第8题:
Of all the extingushing agents listed below, which one has the greatest capacity for heat absorption?______.
A.Water fog
B.Carbon dioxide
C.Dry chemical
D.Solid stream of water
第9题:
A petroleum liquid has a flash point of 85°F. This is a grade ______.
A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid
第10题:
Before welding in a tank that has carried petroleum products,the tank must be certified by ______.
A.the Coast Guard
B.the ABS
C.the shipyard fire department
D.a certified marine chemist