皮皮学，免费搜题
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搜题
【单选题】
Q345钢的牌号解释正确的是_____。A.
抗拉强度≥345Mpa
B.
断裂强度≥345Mpa
C.
屈服强度≥345Mpa
D.
硬度值345HB
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】关节的基本构造是
A.
关节面、关节囊、关节内韧带
B.
关节面、关节囊、关节内软骨
C.
关节腔、关节囊、关节内软骨
D.
关节面、关节囊、关节腔
E.
关节腔、关节囊、关节软骨
【判断题】The initial letter does not refer to the letter of establishing business relations.
A.
正确
B.
错误
【单选题】The letter ______ three days ago and it ______ yesterday. [ ]
A.
had post, had arrived
B.
was posted, arrived
C.
posted, arrived
D.
had been posted, was arrived
【简答题】三极管工作在放大区的外部条件是( )。
【判断题】The initial letter does not refer to the letter of establishing business relations.
A.
正确
B.
错误
【单选题】Franklin compared himself to a worn-out carpet in order to show that he was too exhausted to be of any use to his country.
A.
Y
B.
N
C.
NG
相关题目：
【判断题】The initial letter does not refer to the letter of establishing business relations.
A.
正确
B.
错误