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【单选题】
【2018-60】关于施工图预算编制内容和要求的说法,正确的是( )。A.
施工图总预算应控制在已批准的设计总概算投资范围以内
B.
当建设项目只有一个单项工程时,则不需要编制建设项目总预算
C.
单位工程预算编制依据的定额应为企业定额
D.
建设项目总预算是反映建设项目施工阶段投资总额的造价文件
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【单选题】My brother _______ while he _______ his bicy c le and h u rt himself
A.
f ell , was riding
B.
fell , is riding
C.
had fallen, rode
D.
had fallen. was riding
【单选题】A man has genotype A1A2 G1G2 (one each of the A1 and A2 alleles of gene A, and one each of the G1 and G2 alleles of gene G) The A and G loci are on different chromosomes. What gametes will a single me...
A.
2 of A1A2, 2 of G1G2
B.
1 of A1A1, 1 of A1G1, 1 of A2G1, 1 of G1G2
C.
1 of A1, 1 of A2, 1 of G1, 1 of G2
D.
1 of A1G1, 1 of A1G2, 1 of A2G1, 1 of A2G2
E.
None of the above
【简答题】根的初生木质部发育方式是（），而茎的初生木质部的发育方式是（）。
【单选题】A man has genotype A1A1, G1G2. (He has two copies of the A1 allele of gene A, one copy each of the G1 and G2 alles of gene G). The A and G genes are on different chromosomes. What gametes will a singl...
A.
2 of A1A1, 2 of G1G2
B.
1 of A1A1, 1 of A1G1, 1 of A1G2, 1 of G1G2
C.
2 of A1G1, 2 of A1G2
D.
2 of A1, 1 of G1A2, 1 of G2
E.
None of the above
F.
More information is needed
【简答题】轴的直径为30mm,材料为低碳钢,F=500N,M=100Nm受力如图,(1)确定轴的危险点,并画出危险点的应力状态;(2)求出轴危险点的主应力;(3)按第三强度理论计算其相当应力。
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