Which is correct of the planned visit to Vietnam by a team of U. S. senior officials?
A.The visit is fixed for next month.
B.The visit won’t come quickly or easily,
C.The visit is focused on Vietnam’s reform.
D.The visit is focused on a comprehensive treaty.
第4题
A.冲压钢脚手板
B.木脚手板
C.竹串片脚手板
D.竹笆脚手板
第5题
A、直角扣件
B、旋转扣件
C、对接扣件
D、双扣件
第8题
A、400
B、300
C、450
D、350
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