对任何进行预置ARPA输入信号和数据的操作,下列哪种讲法是正确的()
A、雷达开机时
B、ARPA开机并等ARPA自检通过后
C、ARPA开机时
D、任何时候
参考答案:B
It was not _____ she took off her dark glasses _____ I realized she was a famous film star.[ ]
A. where, that
B. until, that
C. until, when
D. when, then
在下列哪种情况下,紧缩货币政策的有效性将削弱?()
A、实际利率很低;
B、名义利率很低;
C、实际利率很高;
D、名义利率很高。