【判断题】Marginal revenue is the change in total revenue caused by selling one additional unit of output.
【单选题】在TCP/IP参考模型中,与OSI参考模型中的传输层对应的是( ).
【判断题】Marginal cost is the change in total cost when one additional unit of output is produced.
【单选题】A firm's marginal cost can always be thought of as the change in total cost if
A.
the firm produces one more unit of output.
B.
the firm buys one more unit of capital.
C.
the firm's average cost increases by $1.
D.
the firm moves to the next highest isoquant.
【单选题】第II部类中的IIc 在本部类产品的实物形态上体现的是 ( ) 。
【单选题】A firm's marginal cost can always be thought of as the change in total cost if ______
A.
the firm buys one more unit of capital.
B.
the firm produces one more unit of output.
C.
the firm moves to the next highest isoquant.
D.
the firm's average cost increases by $1.
【单选题】在TCP/IP参考模型中,与OSI参考模型中的传输层对应的是( ).
【简答题】齿轮泵困油现象的产生原因是齿轮重合度ε≥ 1 ,会造成( )和( ),解决的办法是在泵盖上加工( ),为减小径向不平衡力齿轮泵的( )口小于( )口。