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【简答题】
If companies pay lip service to customers, whether consumer or business, they run the risk of missing out on valuable profits; those that value their customers and view them not only a source of revenue but also a means to improve as a business can reap the rewards.
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【简答题】Habitrol is very effective for increasing the chances of stopping smoking ______ .
【简答题】A.fighting B.striking C.reating D.stopping
【简答题】请简述小孔成像的特点以及小孔成像说明的规律．
【单选题】下列关于经典突触的描述,正确的是( )
A.
属于非定向化学性突触
B.
含各类递质的突触小泡无形态差异
C.
各类递质均在激活区释放
D.
激活区位于前膜上对应于后膜受体的位置
E.
后膜受体都是化学门控通道
【简答题】“小孔成像”时，对小孔的要求是______________；小孔成像说明光具有__________特点。
【单选题】Which statement about stopping a vessel is TRUE?（）
A.
A lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from astern
B.
A vessel is dead in the water when the back wash from astern operation reaches the bow
C.
A tunnel bow thruster can be used in an emergency to reduce the stopping distance
D.
When a vessel is dead in the water any speed displayed by doppler log reflects the current
【简答题】（大连市）“小孔成像”时，对小孔的要求是______；小孔成像说明光具有______特点．
【单选题】关于小孔成像，正确的是（ ）
A.
小孔成像实验中，小孔越大成像越清楚
B.
小孔成像实验中，小孔越小像越亮
C.
小孔成像实验中，小孔一定要是圆的
D.
小孔成的像，一定是倒立的
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