Which statement is NOT true?

A．In a simple vane pump, the rotor and cam ring are exactly concentric

B．Balanced vane pump has an elliptical cam ring

C．Liquid in both gear pump and vane pump are forced out to the outlet.

D．Balanced vane pumps can work at a higher pressure than the simple vane pump

[单选题]Which statement is NOT true?A．While displacement pump works, volume of the working chamber will increase and decrease alternatelyB．A gear pump always has two gearsC．Any vane pump will have a rotor within a ringD．A balanced vane pump has two outlet po

[单选题]Which statement is True?A．The Port State Control Officer has no right to check a SSPB．The Master has the right to refuse the request from a Port State Control Officer to check the confidential part of the SSP on boardC．The Confidential part of a SSP

[单选题]Which statement is NOT true?A．Most callers are girl students．B．There are only a few callers every time．C．The students’ phones show that many parents failed in properly handling their children’ s problems．D．This special phone line has been in service

[单选题]Which of the following statement is TRUE according to this passage?A．Beijing Hotel has just been opened recently.B．There are too many luxurious things in Beijing Hotel.C．Beijing Hotel will prepare rooms for those that had booked the room.D．Not only f

[单选题]Which of the following statement is true?A． Mark played an active part in community activities.B． the city councilwoman was responsible for the decrease of life quality.C． people were encouraged to give advice to solve these city problems.D． many peo

[单选题]Is the following statement true or false?A． significant change in the ownership of an existing audit client is a factor which makes it appropriate for the auditor to review the terms of engagement.A．TrueB．False

[单选题]Which of the following statement is NOT true?A． When you run out of money, you can ask your partner to call back.B． Telephone books in the US have different colors.C． The state of Oregon has several area codes.D． An area code is necessary in making a

[单选题]A．ccording to the author, which statement concerning philosophers is most nearly accurate?A． They are impractical.B． They are too radical.C． They are a thoughtful group.D． They have contempt for humanity.

[单选题]Which of the following statement related to PMO is not correct? (71)A．The specific form, function, and structure of a PMO are dependent upon the needs of the organization that it supports.B．One of the key features of a PMO is managing shared resource

[单选题] Which statement about the preliminary design stage of a software development project is true? （75） .（75）A．The preliminary design is an internal document used only by programmersB．The preliminary design is the result of mapping product requirements i