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【判断题】
结构上有变形必有位移,有位移不一定有变形。()
【判断题】
结构发生了变形,必然会引起位移;反过来,结构有位移必然有变形发生。
【判断题】
在小变形条件下,结构位移计算和变形位移计算均可应用叠加原理。
【单选题】
变形体虚位移原理的虚功方程中包含了力系与位移(及变形)两套物理量,其中()。
【单选题】
下列结论中哪些是正确的( )。(1)若物体产生位移,则必定同时产生变形。(2)若物体各点均无位移,则该物体必定无变形。(3)若物体产生变形,则物体内总有一些点要产生位移。
【单选题】
梁在荷载作用下的位移主要是由什么变形产生的( )。
【单选题】
位移法中“受弯直杆在变形后两端距离保持不变”的结论是由()假定导出的。
【单选题】
“in addition to”is a/an_______ collocation.
【单选题】
The figure of speech used in “The world is a stage”is_______.
【单选题】
When making a choice of words, speaker/writer needs to consider the following major factors EXCEPT_______.
④
formal and informal English
【判断题】
Homophones are two or more words that sound alike, but look different and have different meanings, such as “sea”and “see”.
【判断题】
All the free morphemes are lexical morphemes and all the bound morphemes are grammatical morphemes.
【判断题】
Anglo-Saxon vocabulary is usually regarded as the main body of the English vocabulary.
【判断题】
When efficiency and formality are in conflict, the fast-paced modern people often sacrifice the latter.
【单选题】
The sense relation between “fruit”and “apple”is _______.
【单选题】
Noticeable changes of English words in recent years consist of the following characteristics EXCEPT___________ .
①
increasing use of abbreviation
②
increasing use of open compounds
③
increasing use of clauses
④
increasing use of conversion
【单选题】
Historical linguistics reveals that the English vocabulary sprang from three major root sources:_______.
②
French, Germanic, Greek
④
Germanic, Italian, French