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【单选题】
在课题 “ 不同教学方法对学生学习效果的影响研究 ” 中 , 无关变量是 ( )。
A.
探究学习法
B.
讨论学习法
C.
教师教学能力
D.
学生学习效果
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
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举一反三
【单选题】It may be inferred from this passage that icebergs are formed
A.
by a drop in ocean temperatures
B.
when an ice shelf breaks free
C.
if mountain glaciers melt
D.
from intensely cold islands
查看完整题目与答案
【多选题】在分析场效应管放大电路的高频放大倍数的时候, 我们把图1所示的电路进一步等效成图2所示的电路。 图1 图2 从图2, 我们推导出这个电路的放大倍数的模的表达式。如下: 关于这个表达式,下面的那些说法是正确的?
A.
这个表达式给出了放大倍数的大小（幅值）与信号频率ω之间的关系，称为“幅值－频率”特性公式，简称幅频特性公式。
B.
根据这个公式， 当信号频率很高时， 电路的放大倍数达到最大。
C.
根据这个公式， 当信号频率很低时， 放大倍数几乎不随信号频率变化。
D.
根据这个公式， 这个电路的上限截止频率
E.
这个公式中的Ausm是在忽略Cgs和Cgd的条件下， 按照第十章学过的方法计算得到的电压放大倍数。
查看完整题目与答案
【简答题】The author is ______ toward icebergs.
查看完整题目与答案
【单选题】如图所示电路中,当开关S闭合时,电压表V1、V2、V3的示数分别为U1、U2、U3,电流表A1、A2的示数分别为I1、I2(五块电表的读数均不为零),那么下列关系式正确的是( )
A.
U 2 ＝ U 1 =U 3 I 1 ＝ I 2
B.
U 2 ＝ U 1 +U 3 I 1 ＝ I 2
C.
U 3 ＝ U 1 +U 2 I 1 ＝ I 2
D.
U 3 ＝ U 1 +U 2 I 1 ＞ I 2
查看完整题目与答案
【简答题】A．The ice in the Antarctic will never melt. B．The disasters caused by icebergs are all over the world. C．The Antarctic is hot with volcanoes. D．Volcano can protect ice sheet from melting.
查看完整题目与答案
【单选题】Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes _____ .
A.
Iceland Current
B.
Baltic Current
C.
Labrador Current
D.
Baffin Current
查看完整题目与答案
【简答题】The icebergs are erous because they are hidden __ and can turn over unexpectedly.
查看完整题目与答案
【单选题】The Titanic was a ship just not ______to run into icebergs. When it did,nothing could stop it. [      ]
A.
design
B.
to design
C.
designed
D.
designing
查看完整题目与答案
【单选题】When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）
A.
Icebergs may travel in a direction many degrees different from the sea ice
B.
Both icebergs and sea ice will move in approximately the same direction and at the same speed
C.
Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg
D.
Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk
查看完整题目与答案
【单选题】The captain turned ______ early that night, not realizing that the icebergs were so close.
A.
in  
B.
down    
C.
into    
D.
off
查看完整题目与答案
相关题目：
【单选题】It may be inferred from this passage that icebergs are formed
A.
by a drop in ocean temperatures
B.
when an ice shelf breaks free
C.
if mountain glaciers melt
D.
from intensely cold islands
查看完整题目与答案
【多选题】在分析场效应管放大电路的高频放大倍数的时候, 我们把图1所示的电路进一步等效成图2所示的电路。 图1 图2 从图2, 我们推导出这个电路的放大倍数的模的表达式。如下: 关于这个表达式,下面的那些说法是正确的?
A.
这个表达式给出了放大倍数的大小（幅值）与信号频率ω之间的关系，称为“幅值－频率”特性公式，简称幅频特性公式。
B.
根据这个公式， 当信号频率很高时， 电路的放大倍数达到最大。
C.
根据这个公式， 当信号频率很低时， 放大倍数几乎不随信号频率变化。
D.
根据这个公式， 这个电路的上限截止频率
E.
这个公式中的Ausm是在忽略Cgs和Cgd的条件下， 按照第十章学过的方法计算得到的电压放大倍数。
查看完整题目与答案
【简答题】The author is ______ toward icebergs.
查看完整题目与答案
【单选题】如图所示电路中,当开关S闭合时,电压表V1、V2、V3的示数分别为U1、U2、U3,电流表A1、A2的示数分别为I1、I2(五块电表的读数均不为零),那么下列关系式正确的是( )
A.
U 2 ＝ U 1 =U 3 I 1 ＝ I 2
B.
U 2 ＝ U 1 +U 3 I 1 ＝ I 2
C.
U 3 ＝ U 1 +U 2 I 1 ＝ I 2
D.
U 3 ＝ U 1 +U 2 I 1 ＞ I 2
查看完整题目与答案
【简答题】A．The ice in the Antarctic will never melt. B．The disasters caused by icebergs are all over the world. C．The Antarctic is hot with volcanoes. D．Volcano can protect ice sheet from melting.
查看完整题目与答案
【单选题】Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes _____ .
A.
Iceland Current
B.
Baltic Current
C.
Labrador Current
D.
Baffin Current
查看完整题目与答案
【简答题】The icebergs are erous because they are hidden __ and can turn over unexpectedly.
查看完整题目与答案
【单选题】The Titanic was a ship just not ______to run into icebergs. When it did,nothing could stop it. [      ]
A.
design
B.
to design
C.
designed
D.
designing
查看完整题目与答案
【单选题】When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）
A.
Icebergs may travel in a direction many degrees different from the sea ice
B.
Both icebergs and sea ice will move in approximately the same direction and at the same speed
C.
Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg
D.
Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk
查看完整题目与答案
【单选题】The captain turned ______ early that night, not realizing that the icebergs were so close.
A.
in  
B.
down    
C.
into    
D.
off
查看完整题目与答案