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问题
问答题 论述题
制图题：画出输煤系统方框图。
答案
参考答案：
填空题
从方框中选择适当的词汇完成句子。
hot, cold, many, relaxed, everyone
1. Today __________ comes early.
2. It's ve
ry ______ today. Let's go swimming, Jim.
3. There are _________ animals in the zoo.
4. The people in the park are really _____________.
5. It's very _______ outside. Put on your coat.
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单项选择题
桥梁基础施工机械中，大型桥梁钻孔桩的钻孔施工宜采用( )。
A．回转斗钻机
B．冲击钻机
C．全套管钻机
D．螺旋钻机
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ry ______ today. Let's go swimming, Jim.