直接标价法下,外汇汇率上升意味着外币升值、本币贬值
参考答案:对
根据要求改变下列句子,每空格填一词。
1. The boy jumps high.(改成感叹句)
______ ______ the boy jumps!
2. -Does Mike usually like making clothes?(作否定回答)
-No, ______ ______.
3. I have seven lessons every day.(用he或she改写句子)
______ ______ seven lessons every day.
4. It's seven twenty now.(对画线部分提问)
______ ______ is it now?
5. We have Chinese,Maths and PE on Monday morning.(对画线部分提问)
What _____ do you ______ on Monday morning?
铝是金属中较轻的,1958年以来人们又研制出更轻的铝--泡沫铝,泡沫铝的密度为178 kg/m3,经测算可知制造一架飞机的机翼要用泡沫铝0.178t,其体积多大?比铝制机翼质量减少了多少?(铝的密度为2.7×103kg/m3)