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【单选题】
哪种链条更适合于叉车的使用?A.
片式链
B.
套筒滚子链
C.
圆环链
D.
都可以
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】按 之不同,钢材有镇静钢和沸腾钢之分。
【简答题】水准路线有哪些形式？各种路线形式的概念是什么？
【简答题】将下列句子中的汉语部分译成英语，注意所用词的形式。 小题1:What’s this ? ( 用英语) 小题2:— is he ? ( 几岁；多少岁 ) —He is four. 小题3:—What does your sister look like? —She has . (一张圆圆的脸) 小题4:—What does Han ...
【简答题】按( )的不同，钢材有镇静钢和沸腾钢之分。
【单选题】The main hypothesis on the origin of life on earth holds that ___.
A.
life arose spontaneously by chemical evolution
B.
life arose by physical evolution
C.
meteorites brought prokaryotic cells to earth
D.
life arose by natural selection
E.
none of the above
【简答题】Look and write.美图配好词，将下列的课程用英语表达出来。 _____
【单选题】The main hypothesis on the origin of life on earth holds that .
A.
life arose spontaneously by chemical evolution
B.
life arose by physical evolution
C.
meteorites brought prokaryotic cells to earth
D.
life arose by natural selection
【单选题】The main idea of the Sapir-Whorf Hypothesis is that
A.
language is just a device for reporting a person's experience.
B.
two languages can represent the same social reality.
C.
the social reality can be conveyed to a person who does not speak the language.
D.
language functions as a way of shaping a person's experience.
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