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【单选题】
为调整父母本花期相遇要用激素处理,下面可以促进抽薹开花的激素是()A.
赤霉素
B.
邻氯苯氧丙酸
C.
乙烯利
D.
脱落酸
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【单选题】When the guests went into the hall, he wrote down their all names . A B C D
A.
a
B.
b
C.
c
D.
d
【简答题】图2—1(a)所示等边三角形板ABC，边长为a，今在三角形的三个顶点沿着三角形边缘方向作用大小均为F的三个力，方向如图中所示。求三力的合成结果；若将作用在A点的力的方向改变成如图2—1(b)所示，则其合成结果又将如何?
【单选题】All the guests were dancing and singing when suddenly the light ______. [ ]
A.
gave back
B.
went out
C.
picked up
D.
carried on
【简答题】A group of graduates got together to visit their old university professor.They talked about the 1 topic—happiness.But soon their conversation turned into complaints about__ 2 in work and life. To of...
【简答题】三1 起重机械 工作特点 ——各机构需进行频繁的( )、制动和( ),是一种作周期性( )运动的机械
【单选题】All the guests were dancing and singing when suddenly the light _________.
A.
turned up
B.
went off
C.
took away
D.
carried on
【单选题】如图所示,边长为a的等边三角形的三个顶点上,放置着三个正的点电荷,电量分别为q,2q,3q.若将另一正点电荷Q从无穷远处移到三角形的中心O处,外力所作的功为
A.
2 Qq/4 a
B.
4 Qq/4 a
C.
6 Qq/4 a
D.
8 Qq/4 a
【单选题】When the guests went into the hall, he wrote down ________.
A.
all their names
B.
their all names
相关题目：
【单选题】When the guests went into the hall, he wrote down their all names . A B C D
A.
a
B.
b
C.
c
D.
d