危险化学品安全技术扑救( )火灾时，绝对禁止用水、泡沫、酸碱等灭火剂。 A．易燃液
题型：单项选择题
问题：
危险化学品安全技术
扑救( )火灾时，绝对禁止用水、泡沫、酸碱等灭火剂。
A．易燃液体
B．遇湿易燃物品
C．爆炸物品
D．气体类
题型：单项选择题
运动前的热身活动有助于肌肉放松，也能避免受伤。请阅读题有关热身活动的文字，然后从A、B、C、D和E中选择符合文字内容的图示，并将答案写在对应题号的横线上。
小题1:Activity 1:
◇Hold arms straight out to the sides
◇Move your arms in circles
◇Come back to the starting position and move your arms in the other direction
小题2:Activity 2:
◇Raise one foot backward, and hold it with one hand
◇Breathe and slowly pull your foot to your hip(屁股)
◇Try to keep both knees together
小题3:Activity 3:
◇Stand with some space in front of and behind you. Move the top of your body downward
◇ Keep your back straight and reach for your feet with both hands
◇Hold this for about half a minute
小题4:Activity 4:
◇Take one step forward with your right foot
◇Put your hands on the right knee and press(压)
◇Do the action in the same way with your left foot
小题5:Activity 5
◇Stand with feet shoulder-width apart（两脚与两肩同宽）
◇Raise both arms overhead
◇Hold for about half a minute and relax