强制油泵是用来冷却磨煤机的机械轴承。
参考答案：错
解析：强制油泵是用来冷却磨煤机的电机轴承。
用动词的适当形式填空.
1. My mother _____ ( clean) our house yesterday afternoon .
2. My friend _____ ( say) goodbye to me and went out.
3. —_____ ( be) your children at home last night?
—Yes, they _____.
4. —What _____ Jeff _____ (do) last night?
—He _____ (watch) TV.
5. —How _____ ( be) your last weekend?
—It _____ (be) exciting.
光干涉瓦斯检定器是检测隧道内瓦斯浓度的常用仪器。
