水平布置的蒸汽管道应顺汽流方向倾斜,其坡度一般不小于()。
A、1/1000
B、2/1000
C、3/1000
参考答案:B
招标投标投诉的受理人是()。
A.招标人
B.招标投标的行政监督部门
C.招标代理机构
D.评标委员会
Mrs Brown was much disappointed to see the mobile phone she had had______the week before went wrong again.
A.it
B.it repaired
C.repaired
D.to be repaired