焊接网表面不得有影响使用的缺陷,更不允许有毛刺、表面浮锈以及因取样产生的钢筋局部空缺。( )
参考答案:错
下列骨折中属不稳定骨折的是()。
A.斜形骨折
B.螺旋形骨折
C.粉碎骨折
D.青枝骨折
E.裂缝骨折
Such legal entities provide the means for international cooperation and support of macroprojects related to the moon and mars that encourage global private sector participation.
A.existences
B.vitalities
C.persistences
D.complicities