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光电管有真空光电管和充气光电管两类，由和构成。

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用光照射某一物体，可以看作物体受到一连串能量为hv的光子轰击，组成该物体的材料吸收光子能量而发生相应电效应的物理现象称为。

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光敏电阻中亮电流与暗电流之间的差值称为。

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Which one of the following is buyer’s fault that may cause late shipment?

A. Delayed L/C opening
B. Delayed booking of the shipping space
C. The problem happened on production line
D. Prohibition by government

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If it is the seller’s fault that caused late shipment, what should the buyer do?

A. The buyer can extend shipping date stated on the contract.
B. The buyer should share the cost with the seller.
C. The buyer should pay an extra penalty.
D. The buyer can ask the seller to ship the goods by air

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光电管有真空光电管和充气光电管两类，由和 构成。

用光照射某一物体，可以看作物体受到一连串能量为hv的光子轰击，组成该物体的材料吸收光子能量而发生相应电效应的物理现象称为。

光敏电阻中亮电流与暗电流之间的差值称为。

Which one of the following is buyer’s fault that may cause late shipment?

If it is the seller’s fault that caused late shipment, what should the buyer do?

光电管有真空光电管和充气光电管两类，由和构成。