颌面骨中惟一可活动的骨骼是()
A.上颌骨
B.下颌骨
C.颧骨
D.鼻骨
E.额骨
参考答案:B
根据句意及首字母提示补全单词。
小题1:Think it over before you make an important d___________.
小题2:Stupid is another way of saying s_____.
小题3:Our teachers taught us to sing l____ songs before class.
小题4:My parents often tell me not to speak to s_______
小题5:Yesterday he f________ in the exam, so his father hit him.
数控机床的冷却液开关在()位置时,是手动控制冷却液的开关。
A、SPINDLE
B、OFF
C、COOLANT ON
D、M CODE