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【多选题】
连杆机构的特点为:
A.
加工制造比较容易,易获得较高的精度
B.
质量轻
C.
传动平稳
D.
可以实现不同的运动规律和运动要求
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参考答案:
举一反三
【单选题】目前常用的堆焊焊丝主要有( )两类。
A.
铁基和锰基
B.
钼基和钴基
C.
铁基和钴基
D.
铬基和镍基
【单选题】女,76岁,因一侧内囊部脑出血压迫皮质脊髓束导致对侧偏瘫,皮质脊髓侧束的纤维交叉部位在
A.
中脑
B.
脑桥
C.
延髓
D.
脊髓
【单选题】The sentence 'a handful of common sense was worth a bushel of learning' underlined in Paragraph 3 means that ______.
A.
a little practical good sense gained from experience of life is better than a lot of knowledge learned from books
B.
common sense is always more valuable than learning
C.
a little common sense is as worthwhile as a lot of knowledge
D.
learning is never as useful as common sense
【判断题】填料是指为了降低成本和改善塑料的性能等目的而加入塑料中的一种活性物质。
A.
正确
B.
错误
【简答题】原始人在______和_______的基础上,产生了原始的______疗法。
【判断题】原始时期,人在外部世界所做的一切都是他的内心的投射。()
A.
正确
B.
错误
【简答题】According to the author, the phrase “learning to use a computer” (Lines 3-4, Para. 3) means learning ________. A) a set of rules B) the fundamentals of computer science C) specific programs D) general...
【单选题】下列出现较早、较原始的基台是
A.
实心、成品基台
B.
可铸造基台
C.
Ti 基底(Base)氧化锆基台
D.
个性化切基台
【单选题】According to the author,the phrase“learning to use a computer”(Para.3&4) means learning _______.
A.
a set of rules
B.
the fundamentals of computer science
C.
specific programs
D.
general principles of programming
【单选题】According to the author, the phrase 'learning to use a computer'(Lines 3,4,Para.3) means learning_____.
A.
a set of rules
B.
the fundamentals of computer science
C.
specific programs
D.
general principles of programming
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