更多"[单选题]In general,reciprocating pumps"的相关试题:
[单选题]Reciprocating pumps are suitable for delivering
A.small quantities at high pressure
B.large quantities at high pressure
C.moderate quantities at moderate pressure
D.large quantities at low pressure
[单选题]Displacement pumps are those the volume of the pump chamber is alternately increased to draw the liquid in from the suction pipe.
A.that
B.where
C.when
D.which
[单选题]Centrifugal pumps can be designed with a number of impellers to attain a high final delivery pressure.
A.in parallel
B.in series
C.in bank
D.in line
[单选题] Centrifugal pumps have what advantage（s）over reciprocating pumps ________．
A.They are less expensive
B.They are smaller for equivalent pumping ability
C.They pump more cargo in less time
D.All of the above
[单选题]Of the following pumps, ___works by means of changing the chamber volume.
A.centrifugal pump
B.ejector pump
C.reciprocating pump
D.axial-flow pump
[单选题] ______________should start the fire pumps in machinery spaces and see that full pressure is put on fire mains.
A. Bridge personnel
B. Deck hands
C. The OOW
D. Engine room personnel
[单选题] Which general statement concerning radar is FALSE ________．
A.Raising the antenna height increases the radar range
B.The ability of radar to detect objects is unaffected by weather conditions
C.Radar bearings are less accurate than radar ranges
D.Radar should be checked regularly during clear weather to ensure that it is operating properly
[多选题]with regard to the general customary law.
A. The state practice shall be extensive.
B. The practice shall be uniform.
C. The general customary rule is binding on all states.
D. The state involved shall not be a persistent objector.
[多选题]which statements about the secretary General are correct?
A. He is appointed by the General Assembly upon the recommendation by the security Council.
B. He is elected for a term of five years.
C. He shall be a national of the Big Five.
D. He is the chief administrative officer of the UN.
[单选题]供应商选择的基本准则是“Q.C.D.S”原则（Quality, Cost, Delivery, Service），也就是质量，成本，交付与服务的原则，其中最重要的因素是（ ）。
A.质量
B.成本
C.交付
D.服务
[单选题] You hear the general alarm and ship's whistle sound for over 10 seconds．Traditionally，this is the signal for ______．
A.abandon ship
B.dismissal from fire and emergency stations
C.fire and emergency
D.man overboard
[多选题]which statements about ·general principles of law）are correct?
A. The formula ·general principles） is used where customs and treaties are absent.
B. ·General principles） refer to those principles accepted by various nations in domestic law.
C. ·General principles） can be derived from both domestic law and international law.
D. The principle of good faith constitutes an integral part of ·general principles）.
[多选题]which statements about the General Assembly are correct?
A. The Assembly meets annually.
B. Emergency session can be convened by a majority of vote of the Assembly or a vote of nine members of the sC.
C. The decisions on important questions are to be made by a two.third majority of members.
D. The decisions on important questions are to be made by a two.third majority of members present and voting.
[单选题] The Brazil Current flows in which general direction ________．
A.Northwesterly
B.Southwesterly
C.Southerly
D.Northerly
[多选题]Which of the following nuclei are general somatic sensory nuclei (一般躯体感觉核)?（ ）
A.motor nucleus of trigeminal nerve
B.pontine nucleus of trigeminal nerve
C.cochlear nuclei
D.spinal nucleus of trigeminal nerve
E.vestibular nuclei
[多选题]Which of the following nuclei are general visceral motor nuclei (一般内脏运动核)?
A.nucleus of oculomotor nerve
B.superior salivatory nucleus
C.inferior salivatory nucleus
D.dorsal nucleus of vagus nerve
E.accessory nucleus of oculomotor nerve
[多选题]There are a number of general principles for the ordering of extradition by a state which include:
A. the offender shall be an extraditable person.
B. the act should be a crime in both the requesting and surrendering state.
C. the crime committed by the offender should be an extraditable one.
D. the person surrendered to the requesting state should not be tried for any offence other than the one for which he is extradited.
