已知9﹣6y﹣4y2=7，求2y2+3y+7的值．
解：原式=8．
The system has been designed to give students quick and easy_____to the digital resources of the library.
A．access
B．passage
C．way
D．approach
使血压测量值相对准确的措施，不包括
A．被测者坐位时，肱动脉平第4肋软骨B．缠袖带松紧以放入一指为宜C．重测血压必须使汞柱降至“0”D．偏瘫患者在健侧肢体测量E．须密切观察血压的患者，应固定测量者
The system has been designed to give students quick and easy_____to the digital resources of the library.