海船船员考试
单选题Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?（）A Lube oil passing through the systemB Moisture or foreign matter collecting at the valve seat and orificeC Variable spring tension caused
题目
Lube oil passing through the system
Moisture or foreign matter collecting at the valve seat and orifice
Variable spring tension caused by the changing temperature
Frost on the liquid line
相似问题和答案
第1题：
158 The Pareto Principle is a technique used by quality managers to determine which quality control problems of a particular service or manufacturing process should be corrected. Which of the following statements represents the philosophy of the principle?
A. In order to minimize financial losses from quality control problems, all problems which have a measurable cost associated with them should be corrected.
B. the majority of defects are caused by a small percentage of the identifiable problems. Improvements efforts should be reserved for these vital few problems.
C. in order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected.
D. generally, 80 % of the quality control problems are justifiable for correction via cost-benefit analysis. The remaining 20% are not financially worthy of improvement efforts.
E. A and D
第2题：
听力原文：Investors can cope with some investment problems by confining their investments to those that involve only modest risk.
(2)
A．Investors can cope with any problems they may meet.
B．Investors can't cope with problems when they meet with difficulty.
C．Investors can cope with some investment problems by confining their investments to those that involve only modest risk.
D．Investors can cope with easy problems.
解析：单句意思为“投资者从事风险小的投资活动可以避免一些投资问题。”
第3题：
A、by
B、to
C、with
D、in
第4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5题：
“行李内有哪些主要物品?”的英文为( )
A.What are the major problems in your baggage?
B.What are the major articles in your baggage?
C.What are the minor articles in your baggage?
D.What are the articles in your baggage?
第6题：
Which of the units listed is used to combust waste in the engine room?
A.Boiler
B.Incinerator
C.Generator
第7题：
One solution to major security problems is ______, which are frequently installed to fix known security holes.
A．patches
B．compensations
C．complements
D．additions
解析：译文的含义是：()是解决主要安全问题的一种方法，它通常被安装来解决已知的安全漏洞。A、B、C、D各选项的意思分别是：补丁、补偿物、补充、插件。所以本题应该选择A。
第8题：
The Pareto Principle is a technique used by quality managers to determine which quality control problems of a particular service or manufacturing process should be corrected. Which of the following statements represents the philosophy of the principle?
A . In order to minimize financial losses from quality control problems, all problems which have a measurable cost associated with them should be corrected.
B . the majority of defects are caused by a small percentage of the identifiable problems. Improvements efforts should be reserved for these vital few problems.
C . in order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected.
D . generally, 80 % of the quality control problems are justifiable for correction via cost-benefit analysis. The remaining 20% are not financially worthy of improvement efforts.
E . A and D
第9题：
One solution to major security problems is(71), which are frequently installed to fix known security holes。
A．additions
B．compensations
C．patches
D．complements
解析：补丁是解决主要安全问题的方法，通过安装补丁可解决已知的安全漏洞。
第10题：
Which of the listed problems could produce a high absolute pressure within a flash type evaporator?
A.production of high salinity distillate
B.seawater feed temperature below 165℃
C.a leak in the first stage demister
D.a cracked distillate pump vent line