Wrought iron can resist liquids flow
It is difficult to attain the wrought iron
Wrought iron should be combined with cuprous alloys
The cuprous alloys have mere disadvantages than wrought iron
第1题：
A. response
B. responsibility
C. resolution
D. resistance
第2题：
材料：
The field current supply in older machines comes from a lower voltage direct current generator or exciter on the same shaft as the alternator. Modern machines however are either statically excited or of the high-speed brush-less type. The exciter is required to operate to counter the effects of power factor for a given load. The power factor is a measure of the phase difference between voltage and current and is expressed as the cosine of the phase angle. With a purely resistance load the voltage and the current are in phase, giving a power factor of one. The power consumed is therefore the product of voltage and current. Inductive or capacitive loads, combined with resistance loads, produce lagging or leading power factors which have a value less than one.
The power consumed is therefore the product of current, voltage and power factor. The alternating current generator supplying a load has a voltage drop resulting from the load. When the load has a lagging power factor this voltage drop is considerable. Therefore the exciter, in maintaining the alternator voltage, must vary with load current and also the power factor. The speed change of the prime mover must also be taken into account.
问题： The word “machines” in the passage refers to _____.
A.the direct current generator
B.the alternating current generator
C.the exciter
D.the prime mover
Which of the following statements is true according to the passage ?
A.With a purely resistance load, the power factor is zero
B.Inductive loads combined with resistance loads produces leading power factors
C.Capacitive loads combined with resistance loads produces lagging power factors
D.With a purely resistance load, the phase angle is zero
When the load has a lagging power factor this voltage drop is considerable. This sentence means that _____.A.with a purely resistance load, the voltage drops too much
B.there is a considerable voltage drop in the capacitive load combined with resistance load
C.when the load is the capacitive load combined with resistance load, the voltage drops to zero
D.when the load is the inductive load combined with resistance load, the voltage drop is fairly large
The exciter must vary with: ① load current ② the power factor, ③ speed change of the prime mover.A.①
B.②
C.①②
D.①②③
请帮忙给出每个问题的正确答案和分析，谢谢！
第3题：
A iron in ;
B to iron at ;
C ironing out
第4题：
第5题：
材料：
When a clean bill of lading has been issued，estoppel arises or，in other words，the carrier is prevented from proving，as against a third party relying on the clean bill of lading，that there was any thing wrong．In the case of inherent vice，however，which is a natural defect in the thing shipped，the carrier is not estopped by his clean bill of lading，because a clean bill of lading，in stating that a certain cargo is on board，gives sufficient notice that this cargo，in the natural course of events，may have certain qualities or defects which all similar cargo normally has．For example，a cargo of flour will shrink slightly，and this fact does not have to be noted on the face of the bill of lading．
Similarly，where cargo is unfit to withstand the ordinary incidents of the contractual voyage contemplated by the parties，owing to some inherent vice or hidden defect presented within it，the carrier is not estopped by the clean bill of lading from asserting the inherent defect exception，provided that the damage has not been aggravated by any conduct of the carrier or those for whom he is responsible．
The carrier issuing a clean bill of lading is only bound by his statements as to the outward condition of the cargo and is therefore not estopped from proving inherent vice or hidden defect when that vice or defect was not apparent at the time of shipment．In other words，a clean bill of lading does not necessarily fulfill the shipper&39;s burden of proof in respect to inherent vice or hidden defect．
问题：
The slight shrinkage of flour is ________．
A.an inherent defect of the cargo
B.a damage which is always aggravated by the conduct of carrier
C.a vice or defect which should be noted on face of B/L due to the fact that it is not apparent at the time of shipment
D.an outward condition of the cargo
The carrier issuing a clean bill of lading will only be bound by ________．A.any thing wrong in the natural course of events
B.the conduct of the carrier or those for whom he is responsible
C.inherent vice or hidden defect presented within the cargo
D.the apparent order and condition of the cargo
Of the following，________ in the cargo shipped on board his vessel should be considered as a thing that will give rise to estoppel on the part of the carrier．A.ordinary incident
B.hidden defect
C.inherent vice
D.inherent defect
It is concluded that on issuing a clean bill of lading，the carrier ________．A.indicates that the cargo is unfit to withstand the ordinary incidents of the contractual voyage contemplated by the parties
B.gives sufficient notice that this cargo has no defects which all similar cargo normally has
C.will be prevented from proving there is any natural defect in the thing shipped
D.will not be estopped from proving inherent vice or hidden defect when that vice or defect was not apparent at the time of shipment
请帮忙给出每个问题的正确答案和分析，谢谢！
第6题：
Constant cooling the various components of diesel engine has a number of functions except for ______.
A.good lubrication
B.low thermal stress
C.good mechanical properties
D.acid corrosion
第7题：
It has been decided that a collision due to any cause other than the negligence of the Shipowner or his servants is within the scope of ________ ．
A.act of God
B.peril of the sea
C.queen's enemies
D.inherent vice in the goods
第8题：
Priestley doesn’t think he has an iron will, and he is not sorry about it.()
第9题：
第10题：