更多"Petroleum is a result of the（）of pl"的相关试题:
[单项选择]The American Petroleum Institute recommends magnetic particle inspection for（）.
A. anchor chain
B. wire rope
C. connecting links
D. pendant wires
[单项选择]The American Petroleum Institute recommends that connecting links and anchor shackles be inspected using（）.
A. visual examinations
B. magnetic particle inspection
C. dye penetrant inspection
D. x-ray inspection
[单项选择] class Animal{ Animal getOne（）{return new Animal（）；}} class Dog extends Animal{ //insert code here } class AnimalTest{ public static void main（String[] args）{ Animal[] animal={ new Animal（）， new Dog（）}； for（Animal a：animal）{ Animal x= a.getOne（）； } } } 和代码： 3a.Dog getOne（） { return new Dog（）；} 3b.Animal getOne（） { return new Dog（）；} 第3行中插入的哪项编译且运行无异常？
A. 3a行或3b行
B. 既非3a，也非3b
C. 3a行
D. 3b行
[单项选择]The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
A. pressure
B. toxicity
C. temperature
D. flammability
[单项选择] 1. class Animal ｛ Animal getOne（） ｛ return new Animal（）； ｝ ｝ 2. class Dog extends Animal ｛ 3. // insert code here 4. ｝ 5. 6. class AnimalTest ｛ 7. public static void main（String [] args） ｛ 8. Animal [] animal ＝ ｛ new Animal（）， new Dog（） ｝ ； 9. for（ Animal a ： animal） ｛ 10. Animal x ＝ a.getOne（）； 11. ｝ 12. ｝ 13. ｝ 和代码： 3a. Dog getOne（） ｛ return new Dog（）； ｝ 3b. Animal getOne（） ｛ return new Dog（）； ｝ 第 3 行中插入的哪项将编译且运行无异常？（）
A. 3a行
B. 3b行
C. 3a行或3b行
D. 既非3a，也非3b
[单项选择]Which of the petroleum products listed has the lowest flash point?（）
A. Hydraulic oil
B. Lubricating oil
C. Diesel oil
D. Refrigeration oil
[单项选择]Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.
A. a subsequent temperature rise will cause the cargo to overflow
B. air pockets may cause the cargo to bubble out of the ullage hole
C. the increased viscosity of the product requires higher loading pressure which increases the chances of a spill
D. the tank valve may be stiff and a spill will occur before the valve can be closed
[单项选择]The weight of liquefied petroleum gas vapors as compared to air is（）.
A. variable
B. the same
C. lighter
D. heavier
[名词解释]土壤动物孔道 soil animal passage
[单项选择]The flash point of a petroleum product is an indication of its（）
A. viscosity
B. pour point
C. volatility
D. lower explosive limit
[单项选择]Persons who have swallowed a non-petroleum based poison are given large quantities of warm soapy water or warm salt water to （）
A. induce vomiting
B. absorb the poison from the blood
C. neutralize the poison in the blood
D. increase the digestive process and eliminate the poison
[单项选择]Insufficient refrigerant in a refrigeration plant may result in （）.
A. high discharge pressure
B. frosting of the crankcase
C. high temperature of the overboard water
D. low suction pressure of compressor
[名词解释]养分高效植物 nutrient efficient plant
[单项选择]A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.
A. B flammable liquid
B. C flammable liquid
C. D combustible liquid
D. E combustible liquid
[单项选择]A petroleum liquid has a flashpoint of 85°C . This liquid is in IMDG code classed as a（）.
A. flammable liquid
B. nonflammable liquid
C. inflammable liquid
D. disflammable liquid
[单项选择]A petroleum liquid has a flashpoint of 85℃.This liquid is in IMDG Code classed as a（）.
A. flammable liquid
B. nonflammable liquid
C. inflammable liquid
D. disflammable liquid
[单项选择]In a compression refrigeration plant the refrigerant flows from the expansion valve and through the （） where it absorbs heat from the space being cooled and becomes a gas or vapor.
A. compressor
B. condenser
C. throttle valve
D. evaporator
