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【判断题】
善于辐射的物体必定善于吸收。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】how many children were there in an irish family on average in the 1950s and 1960s?
A.
Around 5.
B.
More than 8.
C.
One.
D.
2 or 3.
【单选题】在 732K 时反应 NH 4 Cl(s) = NH 3 (g) + HCl(g) 的 为- 20.8kJ . mol -1 , 为 154kJ · mol -1 ,则反应的 为
A.
239J·K-1·mol-1
B.
0.239J·K-1·mol-1
C.
182J·K-1·mol-1
D.
0.182J·K-1·mol-1
【简答题】Passage Two In the past, American families tended to be quite large. Parents raising five or more children were common. Over the years, the size of the family has decreased. One reason for this is an ...
【单选题】In fact a Ghanaian woman has on an average ______ children.
A.
six or more
B.
seven
C.
six
D.
five
【单选题】On average, children still watch three hours of television a day, and calls to _______ the industry have resulted only in minor tweaks.
A.
articulate
B.
speculate
C.
regulate
D.
manipulate
【单选题】在732 K时反应NH4Cl(s)=NH3(g)+HCl(g)的ΔfGmΘ为-20.8 kJmol-1, ΔrHmΘ为154 kJmol-1, 则反应的ΔrSmΘ为:
A.
239 J×K-1×mol-1
B.
0.239 J×K-1×mol-1
C.
182 J×K-1×mol-1
D.
0.182 J×K-1×mol-1
【判断题】On average, children love up to 100 times a day, but Adults only love about 17 times a day.
A.
正确
B.
错误
【单选题】3-1-18 、 在异步串行传输系统中,假设波特率为1200bps,其字符格式为:1为起始位,8位数据位,1位奇偶校验位,1位终止位,则其比特率为 bps。
A.
872.72
B.
1200
C.
981.81
【单选题】氧离曲线是( )
A.
PO2与血氧容量间关系的曲线
B.
PO2与血氧含量间关系的曲线
C.
PO2与血氧饱和度间关系的曲线
D.
PO2与血液pH间关系的曲线
E.
PO2与PCO2间关系的曲线
【单选题】在732 K时反应NH4Cl(s)=NH3(g)+HCl(g)的ΔfG 为-20.8 kJ×mol-1, ΔrH 为154 kJ×mol-1, 则反应的ΔrS 为:( )
A.
239 J×K-1×mol-1
B.
0.239 J×K-1×mol-1
C.
182 J×K-1×mol-1
D.
0.182 J×K-1×mol-1
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