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【单选题】
若铰链四杆机构中最短杆与最长杆长度之和( )其余两杆长度之和,则无曲柄存在,只能构成双摇杆机构。A.
等于
B.
大于
C.
小于
D.
小于等于
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举一反三
【单选题】Two of the words have the same grammatical function in the sentence. one does Not. Choose the letter (A, B or C) which does Not have the same grammtical function. He studied IT for his job but he made...
A.
for
B.
but
C.
so
【判断题】In the following two sentences, decide whether the underlined part in the first sentence is emphasized in the second sentence.1. He lacks morepatience.2. What he lacks is more patience.
A.
正确
B.
错误
【判断题】In the following group of sentences, decide whether the underlined part in the first sentence is emphasized in the second sentence. 1) He came to see us two years later. 2) It was two years later th...
A.
正确
B.
错误
【单选题】Two of the words have the same grammatical function in the sentence. One does NOT. Choose the letter (A, B or C) which does NOT have the same grammatical function. He studied IT for his job but he mad...
A.
for
B.
but
C.
so
【简答题】Direction: Complete the following sentence with a proper word from your textbook on P. 74. Change the form if necessary. he two fighters had (adv.) boxed a 12-round match.
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