皮皮学，免费搜题
登录
搜题
【单选题】
( ) 是由 PLC 生产厂家编写的,固化到 ROM 中。A.
系统程序
B.
用户程序
C.
用户数据
D.
工作程序
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】W: I wonder if Martha will really come at 7:00. She said she would. M: Don’t worry about it. Her word is as good as gold. What does the man mean?
A.
Martha won’t come.
B.
Martha will be late.
C.
Martha will come on time.
D.
Martha can’t keep her promise.
【简答题】根据句意及首字母，写出正确的单词 1. If l w you, I’d stay at home. 2. Don’t worry about what other people are w____. 3. Mum gave me a beautiful backpack as my birthday p and I like it very much. 4. He is always f_ to ...
【单选题】M: The watch is $50, but I have only $40 W: Don’t worry. I'II lend you $10 How much is the watch?
A.
Forty dollars
B.
Ten dollars
C.
Fifty dollars
D.
Sixty dollars
【简答题】证明方程x 5 -3x=1至少有一个根介于1和2之间
【简答题】证明方程 至少有一个根介于1和2之间。
【单选题】— I am afraid I spilled coffee on the tablecloth.— ().
A.
Don’t worry about it.
B.
What’s wrong with you?
C.
What’s happened?
D.
You have done well.
相关题目：