关于WARTSILA SULZER RT-FLEX系列智能柴油机与MAN B&W M

题型:单项选择题

问题:

关于WARTSILA SULZER RT-FLEX系列智能柴油机与MAN B&W ME系列智能柴油机的操纵系统根本区别在于RT-FLEX系列电子控制(),ME系列电子控制()。

A.储压器/高压油泵

B.容积喷射控制单元/储压器

C.储压器/容积喷射控制单元

D.容积喷射控制单元/高压油泵

考点:船舶管理(轮机长)主机遥控系统主机遥控系统题库
题型:单项选择题

读“我国东北某河流流量变化图”,A、B、C分别表示河流的三种补给形式。据此回答下列问题。

小题1:C在汛期时的补给量与枯水期时的补给量比较正确的是

A.汛期时的补给量比枯水期的补给量多,因为汛期时河水水位高,地下水补给增多

B.汛期时的补给量比枯水期的补给量多,因为汛期时地下水水位高,补给河水量增多

C.汛期时的补给量比枯水期的补给量少,因为汛期时河水水位较高,地下水补给量减少

D.汛期时的补给量比枯水期时补给量少,因为汛期时地下水水位高,补给河水量减少小题2:图中虚线表示该河上游修建大坝后的流量曲线,发生这种变化的原因是

A.受到水库调节,全年流量比较和缓

B.地下水位上升,与河流相互补给,流量和缓

C.河水水位下降,与地下水相互补给

D.受到水库调节,河流与地下水补给关系消失

题型:单项选择题

下列各项:①元素的种类②原子的种类③分子的种类④物质的种类⑤原子的个数⑥分子的个数⑦物质的质量总和。在化学反应前后,一定改变的有___________。

题型:单项选择题
阅读下面短文,从短文后各题所给的四个选项(A、B、C、D)中,选出可以填入空白处的最佳选项
I want to share a true story with you. I am    1   that it can inspire (激励) everyone. Let’s be like lamps (灯) or candles to light people’s    2  .
Some of my    3   work in Australia. Among the natives, there was an elderly man. I am sure that you have    4  been in a situation as difficult as that    5   old man’s. He was completely ignored by everyone. His    6   was disordered and dirty.
I told him, “Please let me    7   your house, wash your clothes, and make your bed.” He answered, “I’m    8   with this. Let it be.”
I said again, “It will be still better if you    9   me to do it.”
He finally    10  . So I was able to clean his house and wash his clothes. I    11   a beautiful lamp, which was covered with    12  . Only God knows how many    13   had passed since he last lit it.
I said to him, “Don’t you light your lamp? Don’t you ever    14   it?”
He answered, “No. No one comes to see me. I have no    15   to light it. Who would I light it for?”
I asked, “Would you light it every    16   my sisters came?”
He replied, “Of course.”
From that day on, my sisters committed (投入) themselves to    17   him every evening. We cleaned the lamp and he would    18   it every evening.
Two years passed. I had completely    19   that man. He sent this message: “Tell my friends that the light they lit in my life continues to    20   still.”
小题1:
A.surprisedB.satisfiedC.afraid D.sure
小题2:
A.housesB.plansC.lifeD.clothes
小题3:
A.sistersB.neighborsC.brothersD.children
小题4:
A.alwaysB.neverC.recentlyD.already
小题5:
A.cleverB.strongC.healthyD.poor
小题6:
A.bagB.stationC.homeD.office
小题7:
A.buildB.cleanC.removeD.paint
小题8:
A.okayB.sickC.richD.tidy
小题9:
A.adviseB.begC.allowD.remind
小题10:
A.escapedB.arrivedC.shookD.agreed
小题11:
A.madeB.discoveredC.soldD.passed
小题12:
A.snowB.waterC.dustD.sand
小题13:
A.yearsB.hoursC.secondsD.centuries
小题14:
A.enjoyB.seeC.keepD.use
小题15:
A.timeB.needC.energyD.courage
小题16:
A.nightB.morningC.afternoonD.midnight
小题17:
A.feedingB.leadingC.visitingD.teaching
小题18:
A.coverB.washC.watchD.light
小题19:
A.changedB.forgottenC.understoodD.believed
小题20:
A.shineB.moveC.flyD.rise
题型:单项选择题

简述钩端螺旋体病的主要表现。

题型:单项选择题

因维修保养而影响电梯正常使用时,应至少在()明显位置悬挂告示牌及设防护栏。

A、端站

B、层站(必要时每层)

C、基站

D、人员密集层站

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