A． Lack of counseling.
B． Limited number of visits.
C． Lower efficiency. D Fewer successful matches.
[单选题] Which of the following elements can be called the key element of a computer?（71）（71）A．printerB．CPUC．mouseD．keyboard
[单选题]Which of the following statements can best be inferred from the passage?A． Fishes only "speak" to communicate with each other.B． Researches are now being made to study the significance of fish sounds.C． Sea animals have a sharper hearing ability th
[单选题]Which of the following can best explain Judy Garland’s words?A． Be your true self rather than follow others.B． Don’t copy others or you can’t be the first class.C． Make efforts to be the first instead of the second.D． Don’t learn from others unless t
[单选题]Which of the following can best summarize the main idea of the passage?A． With no Retriever, thousands of laptops are stolen every year.B． A new software provides a means to reduce laptop theft.C． Retriever has helped to find thieves and lost compute
[单选题]Which of the following elements can be called the key element of a computer?(71)A．printerB．CPUC．mouseD．keyboard
[单选题]Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?A．Corrosion and eventual failure of the tankB．Gumming of the tank relief valvesC．Immediate failure of components downstream of the
[单选题]Which of the following can serve as a title of this text?[A] Hard Time for the Preschoolers[B] Prosperity of Private Schools[C] The Problem for Public Schools[D] Americans 's N0 1 Concern
[单选题]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）A . Defective temperature controls in the systemB . Cavitation in the cooling water pumpC . Opened vent in the cooling s
[单选题]Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）A . Clogged air intake faltersB . Piston blow-byC . A defective after-coolerD . Faulty exh
[单选题]Which cause of the following can lead to the engine not to start on air?（）A . starting air pressure too highB . correct timing of starting air valvesC . three of the starting valves stuckD . the turning gear disengaged