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【简答题】
运动过程中截面线平面与()需要有两个交点;
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】小娃娃多了很多好朋友都有哪些特征呢?
【单选题】The recent fire-related accidents were caused by ______.
A.
strong winds and lack of water
B.
rapid economic growth
C.
locked doors and windows
D.
overcrowded people
【单选题】Between 1638 and 1650 hours this day，strong gusty winds were ______ by my vessel，in consequence of which，the vessel's four mooring lines were broken and her portside gangway severely damaged．
A.
gone
B.
done
C.
had
D.
experienced