Which of the following statements is true according to the passage
A. The Queen can make many great decisions in political field.
B. The Queen can dismiss parliament at any time as she tikes.
C. Parliament puts forward Bills and makes them become law without the Queen's permission.
D. The British people 'admire and respect the Queen.
What does the passage mainly discuss
A. The development of British government.
B. The supreme power of Queen Elizabeth.
C. The function of Monarch in Britain.
D. The role of British Prime Minister.
为了实现投资者所拥有的房地产资产价值最大化的目标，三个层次的物业经营管理必须进行有效的协调，并根据( )的变化主动地调整经营策略。
A. 决策层
B. 管理层
C. 操作层
D. 市场需求
在RLC串联电路中，Xc=10Ω，若总电压保持不变而将C短路，总电流的数值与原来相同，则Xt为（）
A. 20Ω
B. 10Ω
C. 5Ω
D. 2.5Ω
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