8AS-17氨压机的最高出口压力为（）MPa。
A、≯1.5
B、≯1.45
C、≯1.8
D、1.45
参考答案：A
Can you _______ me how to play computer games?[ ]
A. teach
B. teaches
C. teaching
It is very kind _______ you to help me with my housework. It is hard _____me to do all
the work.
A．of, for
B．for, of
C．of, to
D．to, for
