Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.
A.moisture in the compressed air supply
B.excessive dryness in the compressed air supply
C.pressure surging in the compressed air receiver
D.insufficient lubrication of the system components
第1题
In 1986 the country initiated restrictions on the use of pesticides.
A.instituted
B.constituted
C.prosecuted
D.distributed
第2题
A.restrictions
B.reimbursement
C.instance
D.premium
第3题
A、the limitations to avoid breaking the law
B、the restrictions to prevent promotional materials becoming a bribe
C、the restrictions to avoid breaking the sales policies
D、None of the other three
第4题
A.limitations
B.conditions
C.Restrictions
D.qualifications
第5题
A.tumble
B.manipulate
C.jeopardize
D.intimidate
第6题
第7题
A.Overviews
B.Populations
C.Restrictions
D.Materials
第9题
A.economic sanction
B.travel restrictions
C.freedom restrictions
D.election restrictions
第10题
What will be discussed later?
A.Lawn-care tips
B.Fire prevention
C.Water restrictions
D.Transportation delays
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