They can be competitive inhibitors, uncompetitive inhibitors, and noncompetitive inhibitors. Often, governments will try to intervene in uncompetitive markets to make them more competitive. However, in contrast to competitive and uncompetitive inhibitors, mixed inhibitors bind to the allosteric site. Unsurprisingly, the car was just as uncompetitive as its predecessor. The latter especially was criticised, with claims that uncompetitive Thai industries could be wiped out. Dizocilpine acts as an uncompetitive antagonist at NMDA receptors. There were few if any adrenergic uncompetitive antagonists. Such high rates were deemed to be uncompetitive. USAC then issues further restrictions on turbines, rendering any future such engines uncompetitive. The action of an uncompetitive antagonist is dependent on the receptor's prior activation. Beyond this, errors when replicating render the virus useless or uncompetitive. However, 1988 saw Williams struggling with an uncompetitive car powered by non-turbocharged Judd V8 engines. Neither driver was happy to race in a seemingly uncompetitive car. From 1989 memantine has been recognized to be an uncompetitive antagonist of the NMDA receptor. Both cars suffered problems and were uncompetitive.