皮皮学,免费搜题
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【单选题】
实施盾构纠偏必须逐环、小量纠偏,必须防止过量纠偏而损坏已拼装管片和( )。
A.
盾尾刷密封
B.
盾体密封
C.
盾尾密封
D.
铰接密封
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皮皮学刷刷变学霸
举一反三
【判断题】「れ」的罗马字输入法是la。
A.
正确
B.
错误
【多选题】下列化合物中含有sp2杂化碳原子的是
A.
B.
乙烯
C.
乙炔
D.
乙烷
E.
1,3-丁二烯
【单选题】下列化合物中同时含有sp和sp2杂化碳原子的是
A.
环丁烯
B.
1,3-丁二烯
C.
丙炔
D.
丙二烯
【单选题】下列化合物中的碳原子采取sp杂化的是:
A.
乙烷
B.
乙烯
C.
乙炔
D.
1,3-丁二烯
【单选题】— What does the sign over there say? — No person ______ enter the area without the official permission. [     ]
A.
shall
B.
may
C.
must
D.
will
【简答题】What does the sign ______mean?此题出自2015年甘肃兰州中考英语真题及答案,2015年甘肃兰州中考英语试题及答案 What does the sign ______mean? A. No parking. B. No photos. C. No eating. D. No smoking.
【单选题】- What does the sign over there say? - “No person ____________ bring drinks into the student computer pool.”
A.
will
B.
may
C.
shall
D.
must
【单选题】—What does the sign over there read? —No person ________smoke or carry a lighted cigarette ,cigar or pipe in this area.
A.
will
B.
may
C.
shall
D.
must
【单选题】— What does the sign over there say? — No person _________ bring drinks into the student computer room.
A.
will
B.
may
C.
shall
D.
must
【简答题】阅读理解。 What does the sign (标识) say? 1. What time does the university park open in March? A. At 6: 00 am. B. At 6: 30 am. C. At 8:00 am. D. At 8: 30 am. 2. Which sign tells you not to smoke? A. Sign 2. ...
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