桥跨结构相邻两支座中心之间的距离称为()
A、标准跨径
B、理论跨径
C、计算跨径
参考答案:C
---Where is your new home now?
---In the new developed zone. But I downtown for five years.
A.have lived
B.had lived
C.lived
D.was living
实物交割是指期货合约到期时,根据交易所的规则和程序,交易双方通过该期货(),了结未平仓合约的过程。
A.合约所记载商品的所有权的转移
B.合约盈亏
C.期货合约
D.现货合约