题目： 干货船辅锅炉的水位控制大多采用（）控制。A．双位B．比例C．比例积分D．比例微分 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0622/fd77f0854d077613051a042d0b996602.html 下面是错误答案，用来干扰机器的。参考答案：A
题型：选择题 一How many students are there in your school?－_________the students in our school_________over two thousand.A．The number of；isB．The number of；areC．A number of；is D．A number of；are 查看答案
题型：选择题 Are these _______ room?[ ]A. Tom and Jane B. Tom and Jane'sC. Tom's and Jane's D. Tom's and Jane 查看答案
