气缸内盛有一定量的氢气(可视作理想气体),当温度不变而压强增大一倍时,氢气分子的平均碰撞频率<img src="https://zk.995w.com/lqwvjeImg/a0/a001f0a10f4cba91481c7ea0174fd5be.png"style="width:16px;height:20px;">和平均自由程<img src="https://zk.995w.com/lqwvjeImg/02/02e99be7e2969bcb18e778164782c703.png"style="width:16px;height:20px;">的变化情况是:( )<br>· <img src="https://zk.995w.com/lqwvjeImg/a0/a001f0a10f4cba91481c7ea0174fd5be.png"style="width:16px;height:20px;">和<img src="https://zk.995w.com/lqwvjeImg/02/02e99be7e2969bcb18e778164782c703.png"style="width:16px;height:20px;">都增大一倍<br>· <img src="https://zk.995w.com/lqwvjeImg/a0/a001f0a10f4cba91481c7ea0174fd5be.png"style="width:16px;height:20px;">和<img src="https://zk.995w.com/lqwvjeImg/02/02e99be7e2969bcb18e778164782c703.png"style="width:16px;height:20px;">都减为原来的一半<br>· <img src="https://zk.995w.com/lqwvjeImg/a0/a001f0a10f4cba91481c7ea0174fd5be.png"style="width:16px;height:20px;">增大一倍而<img src="https://zk.995w.com/lqwvjeImg/02/02e99be7e2969bcb18e778164782c703.png"style="width:16px;height:20px;">减为原来的一半<br>· <img src="https://zk.995w.com/lqwvjeImg/a0/a001f0a10f4cba91481c7ea0174fd5be.png"style="width:16px;height:20px;">减为原来的一半而<img src="https://zk.995w.com/lqwvjeImg/02/02e99be7e2969bcb18e778164782c703.png"style="width:16px;height:20px;">增大一倍