润滑油脂的作用?
参考答案:
1)润滑油:润滑、冷却、减振、冲洗、抗磨、卸荷、防腐,
2)润滑脂:润滑、冷却、抗磨、卸荷、防腐
What ________ news it is! Nobody _________it.
A.a surprising; believes
B.surprising; believes
C.a surprised; believe
D.surprised; believe
理解“Dasein”的意思。