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【多选题】
按可承受载荷的种类,滚动轴承可以分为( )等三种。A.
向心轴承
B.
推力轴承
C.
向心推力轴承
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】The only thing that spoilt my joy a little was that I was so______to have anything typical of my country to wear at the dinner.
A.
unfortunate as
B.
unfortunate as not
C.
unfortunate that
D.
unfortunately that
【简答题】下列关于病毒的叙述中，错误的是 A病毒不能独立生活 B病毒营寄生生活 C病毒具有细胞壁 D病毒只有用电子显微镜才能观察到
【单选题】下列关于病毒的叙述中错误的是( )
A.
病毒是没有细胞结构的生物
B.
病毒营寄生生活，对人类有害无益
C.
病毒由蛋白质外壳和内部的遗传物质组成
D.
病毒只能寄生在活细胞中
【简答题】The little snow that falls in Antarctic never melts.
【单选题】The farmers and bad debts have become synonymous. Little wonder then that a bank that carries a third of all loans to America's farmers is in trouble. But when that bank's total debt is $ 60 billion, ...
A.
Agriculture history of America.
B.
Conflicts between farmers and creditors.
C.
Means of expanding farming.
D.
Help for the Farm Credit System.
【简答题】中国古代学校分为官办和民办两类,其中民办的叫()。
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