良好的设备润滑虽然能保证设备的正常稳定工作，但影响设备的寿命。
参考答案：错
This article says _______ is bad for our lungs.[ ]
A. smoke
B. to smoke
C. smoked
D. smoking
The heart is ______ the stomach, for they are both controlled by the brain.
A．as intelligent as
B．not so intelligent as
C．more intelligent than
D．no more intelligent than
