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零部件加工时，影响其精度的因素主要有工件加工基准的误差、夹具的精度以及工件在夹具上的安装误差、材料的特性和（ ）等
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【单选题】When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required? （）
A.
The supervisor in charge of the dock to which the barge is tied up
B.
Part 38 of the Rules and Regulations for Tank Vessels
C.
The Certificate of Inspection of the barge
D.
The local fire marshal
【单选题】It has been proved ( )
A.
what the brains of men and women are not entirely the same.
B.
what that the brains of men and women are not entirely the same.
C.
that the brains of men and women are not entirely the same.
D.
the brains of men and women are not entirely the same.
【单选题】The sum of all of the debit items in the balance of payments ( ).
A.
Equals the overall balance
B.
Equals the sum of all credit items
C.
Equals “compensating” transactions
D.
Equals the sum of credit items minus errors and omissions
【单选题】The sum of all of the debit items in the balance of payments ( ) :
A.
Equals the overall balance.
B.
Equals the sum of all credit items.
C.
Equals the compensating transactions .
D.
Equals the sum of credit items minus errors and omissions.
【简答题】All individuals are required to ________ to the laws made by their governments. A) obey B) conform C) concede D) observe
【简答题】基准根据作用不同,一般可以分为____和____两大类。
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