反映肝细胞广泛受损的酶学指标是()
A．AST
B．ALT
C．γ-GT
D．MAO
E．胆碱酯酶
参考答案：B
—The children in rural areas have few books to read. Let’s _________ some books to them.
— Great, it is a good idea.
A give away B hand out C take away
安装鱼尾板接头的螺丝时，注意使弹簧垫圈的开口（）。
A、向左
B、向右
C、向下
D、向上
