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【单选题】
混凝土强度与水灰比、温度、湿度以及骨料等因素密切相关，下列说法正确的是（ ）。
A.
混凝土的强度主要取决于骨料强度
B.
施工环境温度升高，水泥水化速度加快，混凝土强度上升也较快
C.
水灰比越小，越不能满足水泥水化反应对水的需求，混凝土强度也越低
D.
混凝土结构松散、渗水性增大、强度降低的主要原因是施工时环境湿度太大
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举一反三
【多选题】关于奇经八脉说法正确的是
A.
督脉、任脉、带脉同起于胞中，称为“一源三岐”
B.
督脉为“阳 脉之海”
C.
任脉为“阴脉之海 ”
D.
任脉又称“血海”
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【单选题】Distinguished guests and friends, welcome to our school, the ceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad.
A.
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To attend
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D.
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葡萄球菌
B.
双球杆菌
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金黄色葡萄球菌
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链球菌
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【单选题】To welcome the 29th Olympic Games, a lot of money ________ in improving the environment in Beijing. [     ]
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take
B.
spend
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spent
D.
is spent
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【单选题】The phrase 'bringing the error to the clerk's attention' (Para. 5)means______.
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telling the truth to the clerk
B.
offering advice to the clerk
C.
asking the clerk to be more attentive
D.
reminding the clerk of the charged item
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【单选题】称为“一源三岐”的奇经是
A.
冲、任、带脉
B.
任、督、带脉
C.
冲、任、督脉
D.
督、冲、带脉
E.
冲、任、跷脉
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【单选题】Welcome to our charity show. It will be held _______ the night of May 4 th .
A.
on
B.
in
C.
at
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【单选题】奇经八脉中,起点相同,被称为“一源三岐”的经脉是
A.
冲、任、带
B.
任、督、带
C.
督、任、冲
D.
督、冲、带
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【单选题】Disthinguished guests and friends, welcome to our school! ________the ceremony of the 50th anniversary this morning are our alumni (校友) from home and abroad.
A.
Attend
B.
To attend
C.
Attending
D.
Having attended
查看完整题目与答案
相关题目：
【多选题】关于奇经八脉说法正确的是
A.
督脉、任脉、带脉同起于胞中，称为“一源三岐”
B.
督脉为“阳 脉之海”
C.
任脉为“阴脉之海 ”
D.
任脉又称“血海”
查看完整题目与答案
【单选题】Distinguished guests and friends, welcome to our school, the ceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad.
A.
Attend
B.
To attend
C.
Attending
D.
Having attended
查看完整题目与答案
【单选题】在转速电流双闭环调速系统中,调节速度给定电压,电机转速不变化。此故障的可能原因是( )。 A.晶闸管触发电路故障 B.PI调节器限幅值整定不当 C.主电路晶闸管损坏 D.电动机励磁饱和
A.
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【单选题】睑腺炎是因细菌感染引起的急性化脓性炎症,最常见的致病菌为
A.
葡萄球菌
B.
双球杆菌
C.
金黄色葡萄球菌
D.
链球菌
查看完整题目与答案
【单选题】To welcome the 29th Olympic Games, a lot of money ________ in improving the environment in Beijing. [     ]
A.
take
B.
spend
C.
spent
D.
is spent
查看完整题目与答案
【单选题】The phrase 'bringing the error to the clerk's attention' (Para. 5)means______.
A.
telling the truth to the clerk
B.
offering advice to the clerk
C.
asking the clerk to be more attentive
D.
reminding the clerk of the charged item
查看完整题目与答案
【单选题】称为“一源三岐”的奇经是
A.
冲、任、带脉
B.
任、督、带脉
C.
冲、任、督脉
D.
督、冲、带脉
E.
冲、任、跷脉
查看完整题目与答案
【单选题】Welcome to our charity show. It will be held _______ the night of May 4 th .
A.
on
B.
in
C.
at
D.
/
查看完整题目与答案
【单选题】奇经八脉中,起点相同,被称为“一源三岐”的经脉是
A.
冲、任、带
B.
任、督、带
C.
督、任、冲
D.
督、冲、带
查看完整题目与答案
【单选题】Disthinguished guests and friends, welcome to our school! ________the ceremony of the 50th anniversary this morning are our alumni (校友) from home and abroad.
A.
Attend
B.
To attend
C.
Attending
D.
Having attended
查看完整题目与答案