2023-06-10
下列铰链四杆机构中,能实现急回运动的是()。
A.A.双摇杆机构
B.B.曲柄摇杆机构
C.C.双曲柄机构
D.D.对心曲柄滑块机
A
Eating less to lose weight.
2023-04-20 竞赛及其他题库
Nowadays we are producing more and more rubbish. Why do you think this is happening?
[Introduction] Youth drug abuse is a serious problem nowadays in many cultures.
You are not allowed to write Task 2 first.
You must complete both tasks to get an accurate band score.
In IELTS, Writing Task 2 counts more towards your overall test band score.
You can do well in one writing task to get a good score.
Writing Task 1 is less important than Writing Task 2.
Your essay cannot discuss every feature of a text or every idea the text has evoked.
The writing task in the new TEM-6 test is source-based.
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