最危险的颈椎骨折脱位是()。
A.C1~2
B.C3~4
C.C4~5
D.C5~6
E.C6~7
参考答案:A
在仪表工程的取源部件中,当采用仪表测量管路连接时,应配有仪表阀门,该仪表阀门为()。
A.截止阀
B.闸阀
C.蝶阀
D.止回阀
There are two cars in front of the company. One is mine, _____ is the manager's, [ ]
A. other
B. another
C. the other