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【判断题】
半自动车钩的气路连接必须依靠人工。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】标记为M20,其螺纹类型是 普通螺纹 ,螺距类型是 粗牙 (粗牙、细牙),旋向是 右旋 ,旋合长度类型是 中等旋合长度 。
A.
非密封罐螺纹、 粗牙、 左旋 、 中等旋合长度
B.
普通螺纹、 粗牙、 右旋 、 中等旋合长度
C.
普通螺纹、 细牙、 左旋 、 中等旋合长度
D.
非密封罐螺纹、 细牙、 左旋 、 中等旋合长度
【单选题】It’s widely accepted that young babies like to do things because certain acts lead to ________.
A.
rewards
B.
prizes
C.
awards
D.
results
【简答题】计算M20普通螺纹的基本参数。(螺距、螺纹大径、螺纹中径、牙型高度、内螺纹小径)
【单选题】By saying that the 'blast wave' from the explosion acts like 'an invisible wall of energy', the author intends to say that ______.
A.
blast can cause shrapnel or other bits of metal to slice through flesh like a knife
B.
its energy can cause a swath of disfiguring burns
C.
this energy wall can prevent victims from physical injury and obvious bleeding
D.
its tremendous energy can inflict massive internal injuries
【简答题】(C) It looks like a mobile phone（手机）, but the service is much cheaper. It acts like a mobile phone, but only in your own city. Beyond the city walls, it’s useless. “Little Smart”, also called “xiaolin...
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