Operator is bound by A: activator B: repressor C: promoter D: enhancer E: silencer

In prokaryotic cells, the DNA sequence which can be recognized and bound with RNA polymerase is called ( ) A: enhancer B: promoter C: silencer D: operator E: attenuator

When received the order "finished with engine" which of the following operations is wrong?____. A: stop the O pump, S.W pump, F.W pump B: stop the priming O transfer pump C: engage the turning gear D: open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover

When received the order "finished with engine" which of the following operations is wrong?____ A: stop the B: stop the priming C: engage the turning gear D: open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover E: W pump F: O transfer pump G: O pump, H: W pump,