The resistance of a conductor varies （）
The deck beam brackets of a transversely framed vessel resist（）.
Each cylinder is closed at the top by a （）, made of a special heat-resistant steel.
Which of the following statements concerning a simple parallel resistance circuit is correct?（）
The total resistance of a parallel circuit is always （）.
With a purely （） load the voltage and current are in phase, giving a power factor of one.
Some large A-Cmotors are equipped with heatersThese could be （） (1)resistance heaters bolted directly to the frame (2)low voltage windings embedded in the motor windings
What would the amps be at 240 volts with an 8 ohm resistance?（）
Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an （）.
It is important to use only pure lead and to choose a thickness of wire which is greater than the normal allowable clearance but （） this amount.
（） thrust and resistance equal each other, the ship always travels at a constant speed.
Football is purely a ________ sport for millions of people all around the world.
This is a purely ______ problem, not political one.
There is a _________ of scientific research from the pure to the applied field.
I say it’s a _________ or multiple love story, pure and complicated.
deals with the War of Anti-Japanese Resistance and civil disputes between many warring Chinese groups.
This is a purely _______ problem, not a political one.
______ The amount of alcohol a person can drink before reaching the legal limit is 80 mg of pure alcohol.
（）&39; s stories still had many unrealistic qualities: " tall tales" and unlikely coincidences. He is never a pure realist.
With apples at 25 cents a pound, we couldn t resist______four pounds.
听力原文：The spread of malaria is like a two-way street. The disease is spread to humans through the bite of mosquitoes infected with malaria parasites, the most dangerous of these being plasmodium falciparum. Uninfected mosquitoes become infected with the parasite by biting infected animals. In sub-Saharan Africa and parts of Asia an estimated 300 million people are infected every year, more than one million of them are children, many of whom die. Years of attempting to cure the disease with antibiotics and quinine drugs have caused the parasite to become resistant to treatment. Scientists are trying to come up with novel strategies for conquering malaria.One idea that has been around for a number of years is the creation of genetically altered mosquitoes that could be released into the environment.
The total resistance of a parallel circuit is always______.
Although a teenager Fred could resist________ what to do and not to do.
Jim couldn’t resist making jokes about his baldness（)。A.avoided
