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The 20-round and 30-round magazines of these weapons limited their sustained automatic effectiveness when compared to belt-fed weapons. [8] The Army decided that an individual machine gun, lighter than the M60, but with more firepower than the M16, would be advantageous; troops would no longer have to rely on rifles for automatic fire. [13]
By 2007, e-bikes were thought to make up 10 to 20 percent of all two-wheeled vehicles on the streets of many major Chinese cities. [16] A typical unit requires eight hours to charge the battery, which provides the range of 25 to 30 miles (40 to 48 km), [ 16 ] at the speed of around 20 km/h (12 mph).
Among them, a concentration of methane and ethane over 35 g/m 3 (0.035 oz/cu ft) will cause loss of consciousness or suffocation, a concentration of pentane and hexane over 45 g/m 3 (0.045 oz/cu ft) will have an anesthetic effect, and aromatic hydrocarbons will have more serious effects on health, blood toxicity, neurotoxicity, and cancer. If ...