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【单选题】
有关螺纹连接画法,下面描述不正确的是( )。A.
剖切平面通过螺栓轴线时,螺栓、螺母、垫圈可按不剖绘制,只画外形。
B.
两零件的接触表面,包括不接触的表面因间隙太小,只画一条线,并适当加粗
C.
两零件相邻时,不同零件的剖面线方向应相反,或者方向一致但间隔不等
D.
被连接件上加工的螺栓直径稍大于螺栓直径, 取1.1d
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【简答题】听一段对话, 回答1 -- 2 小题.听两遍. 1. What is Tom going to do this Saturday? A. He is going to play volleyball with his classmates. B. He is going to play football for the local team. C. He is going to play bask...
【单选题】Kate loves music very much, and he is going to learn how to______. [ ]
A.
keep healthy
B.
play an instrument
C.
play basketball
D.
listen to music
【简答题】在房间里有10个人,分别佩戴着1 到10 号的纪念章,任意选4人记录其纪念章的号码,则最小号码为5的事件的概率等于______(答案填写分数形式)
【单选题】—Lisa, are you going to play ______ violin after school this afternoon? —No, and I’m going to play ______ chess with Tina.
A.
the; the
B.
the; /
C.
/; the
D.
/; /
【简答题】人类与其他脊椎动物血红蛋白中()的差别可以说明其经过的突变的多少。
【单选题】Even on a cold day，he prefers ________out to play football ________ at home.
A.
going；rather stay
B.
going；to staying
C.
to go；rather than staying
D.
to go；rather than to stay
【简答题】听对话，回答问题。 1. What is Tom going to do on Saturday? A. He is going to play volleyball with his friends. B. He is going to play football for the school team. C. He is going to play basketball with the lo...
【单选题】Rather than ___ football with his friends, he decided to stay at home going over his lessons.
A.
played
B.
playing
C.
play
D.
to play
【单选题】Even on a cold day he prefers ______ out to play football ______at home．
A.
going;rather stay
B.
going;to staying
C.
to go;rather than staying
D.
to do;rather than to stay
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