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【单选题】
船舶漂心F是指 。A.
排水体积的形心
B.
水线面面积的几何中心
C.
所受重力的作用中心
D.
倾斜前后两条浮力作用线的交点
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【简答题】用所给词的适当形式填空。 1. You are never too old _______ (learn). 2. Lucy always spends her free time _______ (play) computer s. 3. Who is _______ (tall), Jim or Tom? 4. Don't forget _______ (buy) some books...
【简答题】阅读理解 The rumors had been spreading for months but it still came as a shock when the hospital would be closing. It had served this poor neighborhood for nearly 100 years but it would close because of t...
【多选题】理论空燃比:当1kg( )(AB中选择)和14.7kg的( )(CD中选择)混合时,空气的氧正好可以和燃油完全燃烧,这时的空燃比为14.7:1,我们称之为理论空燃比。
A.
燃油
B.
空气
C.
燃 油
D.
空 气
【简答题】The rumors had been spreading for months but it still came as a shock when the hospital would be closing. It had served this poor neighborhood for nearly 100 years but it would close because of the he...
【简答题】用所给词的适当形式填空 ( 10 分) The girl under the tree is a friend of______________ . (Lucy)
【简答题】词形转换。 用所给词的适当形式填空。 1. Lucy often goes ________(skate). 2. There is __________(hard) any rain these days, so the weather is very dry. 3. He is good at all subjects because he has a good studying ______...
【多选题】下面对清明节表述正确的有() 选择一项或多项:
A.
清明节又称“鬼节”、“冥节”。
B.
清明节是祭祖和扫墓的日子。
C.
清明节习俗有扫墓、踏青、荡秋千、斗鸡子、插柳戴花等。
D.
清明节与五月十五、七月十五合称“三冥节”。
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