某患者被一钝器打伤面部,局部出现肿胀、疼痛和皮下淤血,但未见开放创口,X线检查亦未见颌骨骨折。临床可诊断为( )
A.擦伤 B.挫裂伤C.挫伤 D.钝器伤E.撕脱伤
参考答案:C
They __________ all over the country. So they plan __________ some other countries.[ ]
A. have traveled; visit
B. traveled; to visit
C. traveled; visiting
D. have traveled; to visit
对资源采用按序分配策略能达到下列哪个目的
A.死锁预防
B.死锁避免
C.检测死锁
D.解除死锁