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【单选题】
钢模板的模数制设置,其长度模数为( )A.
50mm
B.
300mm
C.
150mm
D.
250mm
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皮皮学刷刷变学霸
举一反三
【简答题】How many broadcasters from international networks are there in the center? ______
【单选题】听力原文：M: How many students took the exam last Friday? W: Well, fifty had registered, but only half of them showed up. How many students were absent from the test?
A.
15.
B.
20.
C.
25
D.
30
【简答题】根据保证事项是否已经存在，保证可分为（ ）。
【简答题】How many elephants have been taken off the streets and brought here to the elephant center?
【单选题】下列说法正确的是( )
A.
物质的标准摩尔生成焓值一定都小于零
B.
任意单质的标准摩尔生成焓值都等于零
C.
弹式热量计可以精确测量定容反应热
D.
某系统中含有氮气和氩气。只有当系统的温度等于 298.15K 同时氮气和氩气的分压和为 100kPa 时，该系统才是处于标准状态。
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