Throttling in the _____ line of a centrifugal pump involves the risk of the pump cavitation.

A．suction

B．exhaust

C．pressure

D．discharge

[单选题]D．I was in line waiting to pay. In line there were two people before me. A little boy was buying some rather strange clothes. He chatted with anyone who was interested in the clothes and soon we learnt that he was going to a kindergarten(幼儿园) party.

[单选题]The capital allocation line is a straight line from the risk-free asset thr

[名词解释] 正线 main line

[问答题]The British queue up and the Americans wait in line, except for New Yorkers

[单选题]The word ‘work’in the second line of the last paragraph most probably means.A．what a student has written at schoolB．what a student has learned at schoolC．what a student has read at schoolD．what a student has achieved academically

[单选题]B．y “But to...it is not so”(Line 7) the author implies that _____.［A］ most people are just followers of new ideas［B］ even sound minds may commit silly errors［C］ the popularly supported may be erroneous［D］ nobody is immune to the influence of errors

[单选题]The word “crisis” (in the last line but one, paragraph 3) most probably implies _________.［A］ a dangerous moment［B］ the last decision［C］ the crucial point［D］ a brave engagement

[单选题] The line of computing jobs waiting to be run on a computer system might be a (71) . The jobs are serviced in the order of their arrival, that is, the first in is the first out.(71)A． queueB． stackC． arrayD． record

[单选题]The statement “draws the line at operating on people” (Line 3, Paragragh 2) is closest in meaning to_____.［A］ removing wrinkles from the face［B］ helping people make up［C］ enjoying operating［D］ refusing to operate

[单选题]The line of computing jobs waiting to be run on a computer system might be a(71). The jobs are serviced in the order of their arrival，that is，the first in is the first out.A．queueB．stackC．arrayD．record