题目内容（请给出正确答案）

[主观题]

Propeller公司计划生产一款新设计的高技术飞机推进器。Propeller公司预计只要工人获得经验，他们将使用更少的时间完成工作。基于前期经验，Propeller公司假定适用70%的学习曲线，预计了如下成本。累计生产制造预期单位平均单位成本总成本1 $20 000 $20 0002 14 000 28 000完成第一单位推进器后，剩余7单位推进器预估成本为（)。

A、$34,880

B、$54.880

C、$92,000

D、$98,000

如搜索结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装赏学吧APP，拍照搜题省时又省心！

更多“Propeller公司计划生产一款新设计的高技术飞机推进器。…”相关的问题

第1题

Kort nozzles are installed around the propellers of some vessels to ______.A.increase the

Kort nozzles are installed around the propellers of some vessels to ______.

A.increase the thrust of the propeller

B.protect the propeller from striking sawyers

C.protect the propeller from striking barges towed on the hip

D.protect the propeller from touching bottom in low water

点击查看答案

第2题

Propeller pitch speed minus ship speed divided by the propeller pitch speed is termedA.app

Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed

A.apparent slip

B.true slip

C.pitch

D.propulsive efficiency

点击查看答案

第3题

The circular steel structure installed around the propeller of a towboat is the______．A.no

The circular steel structure installed around the propeller of a towboat is the______．

A.nozzle

B.shroud

C.strut

D.Hood

点击查看答案

第4题

A thrust bearing is used with a propulsion diesel engine to ____.A.control axial movement

A thrust bearing is used with a propulsion diesel engine to ____.

A.control axial movement of the crankshaft

B.transmit engine thrust to the propeller shaft

C.absorb vibrations in the propeller shafting

D.prevent propeller thrust from being transmitted to the hull

点击查看答案

第5题

Compared to a constant pitch propeller, a controllable pitch propellerA.more efficiently u

Compared to a constant pitch propeller, a controllable pitch propeller

A.more efficiently uses available engine power

B.operates at a lower efficiency at a fixed speed

C.produces the same torque at lower engine power

D.develops its rated power at a lower speed

点击查看答案

第6题

Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed ___.

A.apparent slip

B.true slip

C.pitch

D.propulsive efficiency

点击查看答案

第7题

A controllable pitch propeller on a diesel driven vessel eliminates the need forA.friction

A controllable pitch propeller on a diesel driven vessel eliminates the need for

A.friction clutches

B.disconnect clutches

C.reversing gears

D.reduction gears

点击查看答案

第8题

A thrust block is designed to ______.A.transmit the thrust of the engine to the propellerB

A thrust block is designed to ______.

A.transmit the thrust of the engine to the propeller

B.transmit the thrust of the propeller to the vessel

C.absorb the shock of wave pressure at the bow

D.be placed between the engines and the foundation to absorb the vibration

点击查看答案

第9题

My propeller was hit by a steel barge lying ________ ．A.aheadB.asternC.alongside my port b

My propeller was hit by a steel barge lying ________ ．

A.ahead

B.astern

C.alongside my port bow

D.alongside my starboard bow

点击查看答案

第10题

The reason why more and more of the large merchant vessels are being powered by medium-spe

ed diesel engines is .

A.they operate between 150 and 450 rpm

B.they are connected to the propeller by gearing

C.their smaller size and weight

D.they can be connected directly to the propeller without gearing

点击查看答案

第11题

A Kort nozzle is a（n) ______.A.hollow tube surrounding the propeller used to improve thrus

A Kort nozzle is a(n) ______.

A.hollow tube surrounding the propeller used to improve thrust

B.nozzle attached to a firefighting hose

C.intake valve on a diesel engine

D.piston cylinder on a diesel engine

点击查看答案

警告：系统检测到您的账号存在安全风险

为了保护您的账号安全，请在“赏学吧”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！

微信搜一搜

赏学吧

点击打开微信

警告：系统检测到您的账号存在安全风险

抱歉，您的账号因涉嫌违反赏学吧购买须知被冻结。您可在“赏学吧”微信公众号中的“官网服务”-“账号解封申请”申请解封，或联系客服。

微信搜一搜

赏学吧

点击打开微信