塔内气速过低会产生什么情况？
参考答案：
会产生塔板漏液，导致塔板分离效率降低，影响产品质量。
一国最重要和流动性最强的国际储备资产是（ ）
A．特别提款权
B．外汇储备
C．普通提款权
D．黄金储备
-- Would you like to visit the forest zoo with me tomorrow?
--_________. [ ]
A．Sorry, I can't
B．That's not bad
C．Yes, I would like to
D．Yes, I do
