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【单选题】
由沸点较低的组分A和沸点较高的组分B组成的二元溶液在某压力下达到汽液平衡时,yA与xA关系为( )。A.
B.
C.
D.
不确定
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【简答题】Match each task with its corresponding stage:Meeting management Tasks1.Write the meeting minutes.2.Calculate attendance.3.Inform the participants.4.Follow the listed items on the agenda.5.Check the ne...
【单选题】听力原文：M：Hello，Mary. How are things? W：Everything goes well. The meeting will be held in London at 9:00 on the 18th We still have six days. Q：When will the conversation most probably take place? (3)
A.
On the 10th.
B.
On the 8th.
C.
On the 12th.
D.
On the 11th.
【简答题】Conversation Three (Questions 9-12) • Look at the notes below. • You will hear a woman leaving a message about where to hold a meeting. Message From Emily Parker She has found appropriate venue for th...
【简答题】11. Joan and Alice
will prepare the PowerPoint presentation for the meeting. A. Joan and
Alice B. the PowerPoint presentation C. meeting
【单选题】The sports meeting has been because of the bad weather. A.put up B. put off C. put out D.put on
A.
put up
B.
put off
C.
put out
D.
put on
【单选题】人体健康离不开钙元素。下列有关钙元素的叙述中,不正确的是( )
A.
人体中钙元素大部分存在于骨骼和牙齿中
B.
幼儿及青少年缺钙会得佝偻病和发育不良
C.
老年人缺钙会得骨质疏松，容易骨折
D.
成年人比幼儿和青少年需要摄入更多的钙
【单选题】对二维数组 a 进行如下初始化 int a[ ][3]={0 , 1 , 2 , 3 , 4 , 5}; 则 a[1][1] 的值是 ____
A.
0
B.
3
C.
4
D.
1
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