The main use of metallic arsenic is for strengthening alloys of copper and especially lead (for example, in car batteries). Arsenic is a common n-type dopant in semiconductor electronic devices, and the optoelectronic compound gallium arsenide is the most common semiconductor in use after doped silicon.rsenic and its compounds, especially the trioxide, are used in the production of pesticides, treated wood products, herbicides, and insecticides. These applications are declining, however. A few species of bacteria are able to use arsenic compounds as respiratory metabolites.
Massachusetts CDL Fees. The fee for the Massachusetts CDL general knowledge written test is $30.00. The fee for each Massachusetts CDL endorsement test you take at the same time as the general knowledge test is $10.00.If you take a Massachusetts CDL endorsement test after the Massachusetts CDL permit or license has been issued, the fee will be $30.00.Each additional endorsement test you take during this same transaction will be an additional $10.00. The fee for a road test is $35.00.assachusetts CDL Fees. The fee for the Massachusetts CDL general knowledge written test is $30.00. The fee for each Massachusetts CDL endorsement test you take at the same time as the general knowledge test is $10.00.
A commercial driver's license (CDL) allows you to operate a commercial vehicle in Virginia and possibly other states, depending on your qualifications. To obtain a CDL or commercial learner's permit (CLP) in Virginia, you must meet all requirements for a Virginia driver's license. You may hold either a driver's license or a CDL, but not both. You must apply for your CDL or CLP in person at a DMV customer service center. For additional information about CDL licensing, please refer to CDL classifications, endorsements and restrictions. Age Requirements. You must be at least at 18 to obtain an intrastate CDL and age 21 to obtain a CDL. Identification and Residency Requirements If you apply for a CDL or commercial learner's permit and DMV records show you have not held a Virginia driver's license or ID card in the past, you must present documents proving your eligibility.