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【简答题】
将下图水平角观测值填入水平角观测手簿,并进行计算。已知:A1=90 ° 01 ¢ 06 2 ,B1=180 ° 00 ¢ 54 2 ,A2=270 ° 00 ¢ 54 2 ,B2=0 ° 01 ¢ 11 2 。
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举一反三
【单选题】Mobility of individual members and family groups tends to split up family relationships. Occasionally the movement of a family away from a situation which has been the source of conflict results in gr...
A.
potential disorganization is present in the American family
B.
family disorganization is more or less the result of mobility
C.
the movement of a family is one of the factors in raising its social status
D.
social development results in a decline in the importance of traditional families
【简答题】一对齿轮的正确啮合条件为： 与分度圆压力角相等。A. 模数相等
【简答题】普通话的调类有四种,分别是阴平、阳平、上声、 。
【简答题】普通话的调类有四种,分别是 、阳平、上声、去声。
【简答题】一对直齿圆柱齿轮的正确啮合条件为：（）与（）。A. m 1 = m 2 α1= α2
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