皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
过去,我国生产能力滞后,因而把工作重点放在扩大投资、提高生产能力上。现在,产能总体过剩,仍_______靠扩大规模投资抬高速度,作用有限且边际效用递减。虽然短期内投资可以成为拉动经济增长的重要动力,但最终消费才是经济增长的_______动力。在扩大有效投资、发挥投资关键作用的同时,必须更加有效地发挥消费对增长的_______作用。 依次填入画横线部分最恰当的一项是:
A.
一味 持久 基础
B.
片面 根本 决定
C.
盲目 核心 一般
D.
单纯 长期 实质
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】Saltwater is typically provided to a refrigeration system to _____.
A.
cool the expansion valve
B.
prevent refrigerant superheating
C.
condense the refrigerant gas
D.
prevent motor overheating
查看完整题目与答案
【单选题】The interior of some diesel engine saltwater heat exchangers are protected from corrosion by the use of_______.
A.
aluminum plates
B.
lead cathodes
C.
copper baffle plates
D.
sacrificial zincs
查看完整题目与答案
【单选题】Where are the zinc plates located? .
A.
saltwater side of the condenser
B.
refrigerant side of the condenser
C.
in the evaporator coils
D.
in the suction strainer
查看完整题目与答案
【单选题】Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to _____.
A.
reduce electrolytic action on heat exchanger metals
B.
keep heat transfer surfaces shiny and clean
C.
prevent rapid accumulation of marine growth
D.
provide a protective coating on heat exchanger surfaces
查看完整题目与答案
【单选题】In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.
A.
saltwater heater shell
B.
second-stage condenser
C.
atmosphere
D.
second-stage flash chamber
查看完整题目与答案
【单选题】If a ship is to be laid up for an indefinite period, the saltwater side of the main condenser should be____
A.
left filled with saltwater with the sea valves closed
B.
drained and dried out after closing the sea valves
C.
left filled with saltwater with the sea valves open
D.
drained an refilled with saltwater after closing the sea valves
查看完整题目与答案
【单选题】据专家们说，从销密的卫星数据中整理出的新的海底图，其详尽程度是过去海底图的30倍。把它们和船上探测获得的大比例尺海洋图加在一起，科学家们便可更加清晰地了解各个不同地点的海洋深度。海底图还可以更加清晰地显示数百万年来地球板块是怎样移动的。 这些海底图是美国国家海洋局和大气管理局的史密斯与美国斯克里普斯海洋研究所的桑德威尔一起绘制的。他们根据卫星测量的、由地球引力变化引起的海面海浪相撞推断出海底特性，...
A.
对海底特性的测量
B.
对海面和海底的观测
C.
对海浪相撞做推论
D.
对引力变化进行测量
查看完整题目与答案
【单选题】The steam coils in a high pressure evaporator used for saltwater service should be de-scaled with _____.
A.
a needle gun
B.
soap and water
C.
a wire brush
D.
a chipping hammer
查看完整题目与答案
【判断题】从数据所获得的有意义的内容成为信息
A.
正确
B.
错误
查看完整题目与答案
【单选题】In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the_____.
A.
saltwater heater shell
B.
second-stage condenser
C.
atmosphere
D.
second-stage flash chamber
查看完整题目与答案
相关题目：
【单选题】Saltwater is typically provided to a refrigeration system to _____.
A.
cool the expansion valve
B.
prevent refrigerant superheating
C.
condense the refrigerant gas
D.
prevent motor overheating
查看完整题目与答案
【单选题】The interior of some diesel engine saltwater heat exchangers are protected from corrosion by the use of_______.
A.
aluminum plates
B.
lead cathodes
C.
copper baffle plates
D.
sacrificial zincs
查看完整题目与答案
【单选题】Where are the zinc plates located? .
A.
saltwater side of the condenser
B.
refrigerant side of the condenser
C.
in the evaporator coils
D.
in the suction strainer
查看完整题目与答案
【单选题】Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to _____.
A.
reduce electrolytic action on heat exchanger metals
B.
keep heat transfer surfaces shiny and clean
C.
prevent rapid accumulation of marine growth
D.
provide a protective coating on heat exchanger surfaces
查看完整题目与答案
【单选题】In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.
A.
saltwater heater shell
B.
second-stage condenser
C.
atmosphere
D.
second-stage flash chamber
查看完整题目与答案
【单选题】If a ship is to be laid up for an indefinite period, the saltwater side of the main condenser should be____
A.
left filled with saltwater with the sea valves closed
B.
drained and dried out after closing the sea valves
C.
left filled with saltwater with the sea valves open
D.
drained an refilled with saltwater after closing the sea valves
查看完整题目与答案
【单选题】据专家们说，从销密的卫星数据中整理出的新的海底图，其详尽程度是过去海底图的30倍。把它们和船上探测获得的大比例尺海洋图加在一起，科学家们便可更加清晰地了解各个不同地点的海洋深度。海底图还可以更加清晰地显示数百万年来地球板块是怎样移动的。 这些海底图是美国国家海洋局和大气管理局的史密斯与美国斯克里普斯海洋研究所的桑德威尔一起绘制的。他们根据卫星测量的、由地球引力变化引起的海面海浪相撞推断出海底特性，...
A.
对海底特性的测量
B.
对海面和海底的观测
C.
对海浪相撞做推论
D.
对引力变化进行测量
查看完整题目与答案
【单选题】The steam coils in a high pressure evaporator used for saltwater service should be de-scaled with _____.
A.
a needle gun
B.
soap and water
C.
a wire brush
D.
a chipping hammer
查看完整题目与答案
【判断题】从数据所获得的有意义的内容成为信息
A.
正确
B.
错误
查看完整题目与答案
【单选题】In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the_____.
A.
saltwater heater shell
B.
second-stage condenser
C.
atmosphere
D.
second-stage flash chamber
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题