以下哪些是用到液体密封的()
A.自动放散装置
B.翻板阀体
C.承插口
D.水封盖
参考答案:A, B, D
原则上应该以()作为计算固定资产投资额的价格依据。
A.协议价格
B.预算价格
C.通过市场交易的实际价格
D.财务部门实际支付的金额
We were _____ happy to know the manned spaceship Shenzhou VI landed on the earth successfully. [ ]
A. more than
B. other than
C. rather than
D. less than