问题
多项选择题
润滑剂的粘度有（）。
A.直接粘度
B.动力粘度
C.运动粘度
D.恩氏粘度
答案
参考答案：B, C, D
搜题请搜索小程序“爱下问搜题”
润滑剂的粘度有（）。
A.直接粘度
B.动力粘度
C.运动粘度
D.恩氏粘度
参考答案：B, C, D
完形填空（本题有10小题，每小题1分，满分10分） 阅读下面短文，掌握大意，然后从A、B、C、D四个选项中选出最佳选项。 My uncle __31__ in a zoo . It’s near a __32__ , so every day he goes there to_____ some sports. In the morning, my uncle gets up early(早) and ___34__ breakfast. Then he _35__his bike to the zoo . He gets(到)_36__at 7:30 . The zoo___37__ at 8:30 . There are _38__ animals in the zoo. And he__39__many people every day . My uncle is very tired in the evening. But he is very happy. He likes his job very much. __ 40__the people are all(都) happy in the zoo . They like the animals very much . My uncle likes the animals, too .
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