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（2014年山东菏泽，7题）仅用下列各组试剂无法完成验证Zn、Cu、Ag三种金属活动性顺序的是
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1.（2014年广东广州，13题）用置换反应验证铁的金属活动性比铜强，下列各组药品能达到目的的是（ ）
Consider a PV module with the following output parameters mentioned at STC (Standard Testing Conditions) by the manufacturer.Pmax = 320 WVoc = 45 VIsc = 8 ANOCT = 40 °CTemperature coefficient of power = -1 W/°CIf the ambient temperature rises to 35 °C while the irradiance is 1000 W/m², what is the cell level temperature, as per the NOCT model, in ºC? ______
Which of the following statements is NOT true about the output of PV cells?
We have identical crystalline silicon solar cells available, with a short-circuit current of 4 A and an open-circuit voltage of 0.6 V at STC. If a PV module is formed by 54 crystalline silicon solar cells in series, what is the open-circuit voltage of the module, in volts, at STC? Assume that the interconnection losses are negligible.Which is the short-circuit current of the module in amps at STC?Assume that the module does not have any bypass diodes. If the module is partially shaded and one of the cells is able to produce only 2 A, what will be the new short-circuit current under these conditions in amps? ______
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