【简答题】By operating a multi-position switch on the meter they can be quickly and easily set to be a voltmeter, an ammeter or an ohmmeter. 2. Select a range with a maximum greater than you expect the reading ...
【单选题】Tin(II) fluoride(SnF 2 ) is often added to toothpaste as an ingredient to prevent tooth decay.What is the mass of F in grams in 35.7 g of the compound?