传动轴装配时，未按标记装配，或平衡片脱落，或轴管凹陷，破坏了动平衡，易导致（）。
A.传动轴发抖
B.传动轴异响
参考答案：A
甲银行与乙银行签订合约，合约规定：甲银行交付3万元给乙银行，6个月后可以按约定价格卖出300万份指定的货币市场基金给乙银行。这种交易是()交易。
A.现货
B.期货
C.期权
D.资本
It was reported yesterday that an official in the department of health was arrested for his________his
power to get benefit for his relatives.[ ]
A．protecting
B．catching
C．abusing
D．taking
