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问题 单项选择题

设备的修理或现代化改装是对设备磨损的( )

A．局部补偿

B．完全补偿

C．日常维护

D．基本建设

答案

参考答案：A

单项选择题

岩层受力后发生变形，当所受的力超过岩石本身强度时，岩石的连续性受到破坏，便形成（）构造。

A、皱曲

B、裂缝

C、断裂

D、节理
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单项选择题

A company is determining the cost of debt to use in its weighted average cost of capital. It has recently issued a 10-year, 6 percent semiannual coupon bond for $ 864. The bond has a maturity value of $1 000. If the marginal tax rate is 35 percent, the cost of debt they should use in their calculation is closest to:（）

A. 4.3%.

B. 5.2%.

C. 6.1%.
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