皮皮学，免费搜题
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搜题
【多选题】
车架的纵梁截面通常是什么形状的A.
U型槽截面
B.
X形
C.
槽形截面
D.
截面
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】主要起调节水量作用，集水池容积应根据进水管的设计流量、水泵抽升能力、水泵启动方式、启动时间、开停次数、池的水力条件以及进泵站前的下水道是否可能作为调蓄容积而定的是( )。
A.
集水池
B.
沉淀池
C.
混凝土池
D.
清水池
【简答题】________________由蒸馏水和纯硫酸按一定比例配制而成,主要作用是参与电化学反应,是铅酸蓄电池的活性物质之一。
【简答题】听音，选出你听到的句子。 ( ) 1. A. Where are your from? ( ) 2. A. My name is Lucy. ( ) 3. A. May I have two pens? ( ) 4. A. I'm wearing a dress. ( ) 5. A. Here they are! B. Where is my pen? B....
【简答题】听问句，选择正确的答语。 ( ) 1. A. Her name is Jenny. ( ) 2. A. My hair is black. ( ) 3. A. I have three pens. ( ) 4. A. It's under the desk. ( ) 5. A. His favourite colour is red. B. His name...
【简答题】完形填空。 My name is Han Mei. I am twelve. I have some 1 . They are Mike, Mary, Jack, Peter and Kate. We are middle school 2 . Mike, Jack and Mary are in 3 same class. 4 are in Class Two, Grade One. Kate,...
【单选题】Tom, Bill and Dave lost their backpacks( 背包 ). They are at the Lost and Found desk. The backpacks are the same, but the things in them are d i fferent. Can you help them find the right backpack? Tom: ...
A.
pencil case
B.
English book
C.
dictionary
D.
notebook
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