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【简答题】
Frank is my good friend. We are in the same class. He is fourteen, one year older than me. His parents are both teachers in No 7 Middle School. Frank studies hard. His English and math are very good. He often helps other students with their English and math. Our teachers like him very much. We go to school together by bike in the morning. We have lunch at school. After school in the afternoon, we often play sports. We play soccer and baseball. In the evening, he does his homework at home. Sometimes he watches soccer games on TV. On Sundays, he goes out with his parents in his father’s car. They play in the park and do sports there. Sometimes my father takes me there, too. We play sports together. We have a good time. 小题1:Who is Frank? He is a _________. A.teacher B.soccer player C.student D.driver 小题2:I’m ________ years old this year. A.fourteen B.thirteen C.fifteen D.sixteen 小题3:Frank is good at __________. A.math and Chinese B.English and Chinese C.math and English D.music and Chinese 小题4:Frank __________ at school. A.has breakfast B.has supper C.has lunch D.watches TV 小题5:When does Frank do his homework? A.In the evening B.In the morning C.In the afternoon D.At noon.
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【单选题】以下( )生产类型不适合使用组合夹具。
A.
单件生产
B.
小批量生产
C.
临时性的突击任务
D.
成批主产
【多选题】活塞顶部形状有()
A.
平顶
B.
凹顶
C.
凸顶
D.
成形顶
【单选题】以下()生产类型不适合使用组合夹具。
A.
单件生产
B.
小批量生产
C.
临时性的突破任务
D.
成批生产
【判断题】因为具有锚地依赖性,动物细胞必须贴壁培养。
A.
正确
B.
错误
【多选题】25 活塞顶部形状有
A.
A平顶
B.
B凹顶
C.
C凸顶
D.
D成形顶
【多选题】活塞顶部形状有?
A.
圆形活塞
B.
平顶活塞
C.
凸顶活塞
D.
凹顶活塞
【多选题】活塞顶部形状有
A.
平顶
B.
凸顶
C.
凹顶
D.
组合顶
E.
球面顶
【单选题】以下()生产类型不适合使用组合夹具。
A.
单件生产
B.
小批量生产
C.
临时性的突击任务
D.
成批生产
【简答题】在学习“组的解”时,数学张老师设计了一个数学活动. 有A、B 两组卡片,每组各3张,A组卡片上分别写有0,2,3;B组卡片上分别写有-5,-1,1.每张卡片除正面写有不同数字外,其余均相同.甲从A组中随机抽取一张记为x,乙从B组中随机抽取一张记为y. (1)若甲抽出的数字是2,乙抽出的数是-1,它们恰好是ax-y=5的解,求a的值; (2)求甲、乙随机抽取一次的数恰好是方程ax-y=5...
【单选题】以下( )生产类型不适合使用组合夹具。
A.
新产品的试制
B.
单件生产
C.
临时性的突击任务
D.
成批主产
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