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【多选题】
营销渠道战略的特征有（）。
A.
给出的是宽泛的方针和政策
B.
给出的是精确的执行计划
C.
是面向未来的
D.
是市场营销战略的一个有机组成部分
E.
是短期的目标和计划
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【单选题】在坐标镗床上镗削圆锥角为a的圆锥孔时,镗刀的轴向进给量L与镗刀的径向进给量H需要保持规定的比值()。
A.
tan a = H/L
B.
tan =H/L
C.
=H/L
D.
=H/L
查看完整题目与答案
【单选题】The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the _______________.
A.
strength of the magnetic field
B.
number of conductors in the armature
C.
speed at which the armature rotates
D.
brush pressure on the commutator segments
查看完整题目与答案
【单选题】在坐标镗床上镗削圆锥角为α的圆锥孔时，镗刀的轴向进给量L与镗刀的径向进给量H需要保持规定的比值（）。
A.
tanα=
B.
tan=
C.
sinα=
D.
cosα=
查看完整题目与答案
【单选题】The speed of a synchronous machine is directly proportional to () in its armature under steady-state conditions
A.
the amplitude of the current
B.
the frequency of the current
C.
the amplitude ofthe voltage
D.
the flux
查看完整题目与答案
【简答题】请填入连接词:that,but,who,whereby,where,whence,as,than,which 1.There is no material will deform(形变)more or less under the action of forces . 2.Ohm’s law can be written as V = IR V represents voltage, I — cu...
查看完整题目与答案
【判断题】In the under-voltage state, there are two peaks in the current ic. ( )
A.
正确
B.
错误
查看完整题目与答案
【判断题】产生重力地质作用的动力来源于内外两个方面:块体内部的重力与外部的触发力。
A.
正确
B.
错误
查看完整题目与答案
【判断题】In the under-voltage status, there are two peaks in the current i c.
A.
正确
B.
错误
查看完整题目与答案
【单选题】For two AC contactors of the same type, the rated voltage of the coil is 220V. If the coils of the two contactors are used in series under the voltage of 220V, the main contact ( ).
A.
both don't act
B.
one acts, another not
C.
both acts
D.
None of  the above is correct
查看完整题目与答案
【单选题】某船夜间航行，航向002º，海图上在航线左正横附近及左前方有标注灯塔的两个小岛，查灯标表得：左正横A岛的灯塔为：F1（2）6s 10M备注栏：W060º～150º（090º）。左前方B灯塔为：F1（2）5s 13M，则该船驾驶员用罗经：
A.
可先测B后测A灯塔定位
B.
可测B灯塔，无法测A灯塔
C.
可测A灯塔、无法测B灯塔
D.
可按任意顺序观测A．B灯塔
查看完整题目与答案
相关题目：
【单选题】在坐标镗床上镗削圆锥角为a的圆锥孔时,镗刀的轴向进给量L与镗刀的径向进给量H需要保持规定的比值()。
A.
tan a = H/L
B.
tan =H/L
C.
=H/L
D.
=H/L
查看完整题目与答案
【单选题】The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the _______________.
A.
strength of the magnetic field
B.
number of conductors in the armature
C.
speed at which the armature rotates
D.
brush pressure on the commutator segments
查看完整题目与答案
【单选题】在坐标镗床上镗削圆锥角为α的圆锥孔时，镗刀的轴向进给量L与镗刀的径向进给量H需要保持规定的比值（）。
A.
tanα=
B.
tan=
C.
sinα=
D.
cosα=
查看完整题目与答案
【单选题】The speed of a synchronous machine is directly proportional to () in its armature under steady-state conditions
A.
the amplitude of the current
B.
the frequency of the current
C.
the amplitude ofthe voltage
D.
the flux
查看完整题目与答案
【简答题】请填入连接词:that,but,who,whereby,where,whence,as,than,which 1.There is no material will deform(形变)more or less under the action of forces . 2.Ohm’s law can be written as V = IR V represents voltage, I — cu...
查看完整题目与答案
【判断题】In the under-voltage state, there are two peaks in the current ic. ( )
A.
正确
B.
错误
查看完整题目与答案
【判断题】产生重力地质作用的动力来源于内外两个方面:块体内部的重力与外部的触发力。
A.
正确
B.
错误
查看完整题目与答案
【判断题】In the under-voltage status, there are two peaks in the current i c.
A.
正确
B.
错误
查看完整题目与答案
【单选题】For two AC contactors of the same type, the rated voltage of the coil is 220V. If the coils of the two contactors are used in series under the voltage of 220V, the main contact ( ).
A.
both don't act
B.
one acts, another not
C.
both acts
D.
None of  the above is correct
查看完整题目与答案
【单选题】某船夜间航行，航向002º，海图上在航线左正横附近及左前方有标注灯塔的两个小岛，查灯标表得：左正横A岛的灯塔为：F1（2）6s 10M备注栏：W060º～150º（090º）。左前方B灯塔为：F1（2）5s 13M，则该船驾驶员用罗经：
A.
可先测B后测A灯塔定位
B.
可测B灯塔，无法测A灯塔
C.
可测A灯塔、无法测B灯塔
D.
可按任意顺序观测A．B灯塔
查看完整题目与答案