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【单选题】
从相量中可直接读取交流电的有效值(或最大值)和 (________) 。A.
相位角
B.
频率
C.
初相角
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反馈参考答案：
举一反三
【单选题】What do the oil industry analysts think?
A.
They think a windfall profits tax might work.
B.
They think consumers will finally benefit from the large oil company profits.
C.
They think a windfall profits tax is good for oil industry.
D.
They think a windfall profits tax should also be imposed on pharmaceuticals industry.
【单选题】企业选择两个以上的细分市场作为目标市场,为不同的细分市场设计有差异的产品,并运用不同的营销组合来适应各个子市场的需要的营销战略是
A.
集中营销
B.
无差异市场营销 (single product)
C.
网络营销
D.
差异市场营销
【单选题】Bond analysts might be more interested in a bond's yield to call if
A.
the bond's yield to maturity is insufficient.
B.
the firm has called some of its bonds in the past.
C.
the investor only plans to hold the bond until its first call date.
D.
interest rates are expected to rise.
E.
interest rates are expected to fall.
【简答题】Yeah, we’ll design the elevator system for the 2 ________of Carlson Real Estate.
【简答题】图所示为一刹车机构。刹车时操作杆1向右拉，通过构件2、3、4、5、6使两闸瓦刹住车轮。试计算机构的自由度，并就刹车过程说明此机构自由度的变化情况。
【单选题】The ________ premium is that portion of the bond yield that represents compensation for potential difficulties that might be encountered should the bond holder wish to sell the bond prior to maturity.
A.
default risk
B.
taxability
C.
inflation
D.
liquidity
E.
interest rate risk
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