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【单选题】
二进制编码器的作用是:A.
用十进制数码表示二进制数码
B.
用十进制数码表示八进制数码
C.
用十进制数码表示不同的信号
D.
用二进制数码表示不同的信号
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皮皮学刷刷变学霸
举一反三
【多选题】“合并(Join)”命令的功能是将相似的对象合并为一个对象,该命令对需要合并的对象有较多限制,如要合并的对象必须位于相同的平面上,()。
A.
直线只能和直线合并
B.
合并的对象如果是两条直线,它们之间可以有间隙,但必须是共线的
C.
需要合并的对象中如果包括多段线,则必须先选择多段线,且所需要合并的对象之间必须首尾相连
D.
一个圆弧和一个椭圆弧只有端点相交时才能合并
【简答题】Dialogue 1 A: I'm _____________ I spilled coffee on the tablecloth. B:Oh, don't _______________ about it. A:I ____________ for my fault. Is there anything I can do? B:just forget it. Dialogue 2 A: I'm...
【简答题】命令可以将两个以上的合为一个点。
【简答题】因为18=2×3×3，所以2和3都是约数，18是倍数．______．
【简答题】S1:I need to get to the airport before 10. Can you make it?S2:I can't promise, but I'll do my best.Q:What is True of the dialogue?A. They may arrive at the airport before 10. B. They are sure to arriv...
【简答题】3个18的和与25的积是多少？列式是（ ） A．3×18×25 B．（3+18）×25 C．3+18×25
【简答题】因为3×6=18，所以3是18的因数．______．
【简答题】听下面一段材料，回答1至4题。 1. What's wrong with the man? A. He can't pay his rent. B. He wants to quarrel with the owner's son. C. He can't bear the noise and the smell. 2. What's the woman's attitude towards th...
【简答题】B. Listen to the short dialogues and answer the following questions. Dialogue 2 Q1. What is Mr. Zhang unable to do for the time being? A1. He can't give Jennifer ________________. Q2. According to Mr....
【简答题】Complete the dialogue and practice it with a partner. Sandy Hi, Tom, I'm going to the gym to _1_ badminton. Will you come with me? Tom I'm afraid I can't _2_ _3_you. I have lots to do. Is badmin...
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