煤的热量法定计量单位是()。
A.卡
B.焦耳
C.大卡/千克
参考答案:B
在“Z”成形术中,角度应以多大为宜()
A.以30°角为宜
B.以45°角为宜
C.以60°角为宜
D.以75°角为宜
E.以不超过75°角为宜
认真读下面的句子,给它们排序。
( ) Yes! It's a Chinese lantern. I asked my mother to send it.
( ) This is for everyone. It's from me.
( ) It's wonderful! Now our Christmas tree will always have something Chinese on it!
( ) Oh! Thank you, Li Ming! Is it from China?