调和好的银汞合金充填时,增加充填压力将导致()
A.强度增加,膨胀减小
B.强度增加,膨胀增加
C.强度降低,膨胀减小
D.强度降低,膨胀增加
参考答案:A
车辆进入山区道路后,要特别注意“连续转弯”标志,并主动避让车辆及行人,适时减速和提前鸣喇叭。
The dull wetland _______ the moment the first ray of sunlight shines on it. Thousands of creatures living in it wake up and begin their life of a new day.
A.stays alive
B.begins to live
C.makes a living
D.comes to life