
【名词&注释】
过敏反应(allergic reaction)、可燃物(fuel)、值班人员(operator on duty)、抗过敏药(antiallergic drugs)、不完全(incomplete)、发现者、可的松(cortisone)
[单选题]The expansion valve used in a refrigeration system regulates the
A. superheat of the gas leaving the compressor
B. back pressure in the evaporator
C. temperature in the refrigerated space
D. degree of superheat of the gas leaving the evaporator
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举一反三:
[单选题]今测得某船轴系的某对法兰偏中值为δ≠0、φ=0,该相邻轴轴心线呈( )状态。
A. 同轴
B. 平行
C. 相交且两法兰中心对准
D. 相交且两法兰中心未对准
[单选题]现场指挥的信息来源不正确的是:
A. 询问发现者
B. 平时对失火处所的了解
C. 外部观察
D. 询问值班人员
[单选题]While sailing in ballast under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is
A. the exhaust temperature
B. the speed of main engine
C. the turbine rotation speed
D. the power of main engine
[单选题]物质发生不完全燃烧,而生成一氧化碳的原因是:______。
A. 可燃物少
B. 缺氧
C. 温度低
D. 温度高
[单选题]按MARPOL附则II的规定,清洗装过X类货物的货舱的污水,必须卸至()。
A. 岸上接收装置
B. 国际法兰
C. SLOP舱
[单选题]The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the ______of merchant ships.
A. pollution
B. economization
C. safety
D. efficiency
[单选题]皮炎是接触或使用某种物质引起的过敏反应,其治疗方法为______。
A. 避免再接触
B. 病变部位用1%盐酸可的松(cortisone)软膏
C. 口服抗过敏药
D. 以上都是
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