当泵的特性高于实际需要的特性，或同一台泵为了能装不同直径的叶轮以扩大其（），可采用（）的办法加以解决。
参考答案：通用性时；适当改变叶轮直径
为营造品茶氛围，品茶环境布置的基本格调讲求：（）。
A.“华贵、精致”
B.“幽、净、雅、洁”
C.“古典、华丽”
D.“文化、高贵”
The officers made it clear that they were letting her go only because that she was old and not because she was above suspicion.
A．for reason
B．due to
C．because of
D．on the grounds
