固定器的别称是?()
A. 脱离器
B. 压缩器
C. 离合器
The development goals for a large marine engine are many often interact and in some cases
A. conflict
B. accord
C. harmonize
D. struggle
–I think the reference book is very helpful --_____________.
A. Good idea
B. So do I
C. Neither do I
D. So am I
关于脊神经的叙述,下列错误的是
A. 脊神经共31对,借前根和后根与脊髓相连
B. 前根为感觉神经,后根为运动神经
C. 有颈神经8对,胸神经12对
D. 第8颈神经经第7颈椎下方的椎间孔穿出
E. 脊神经丛有颈丛、臂丛、腰丛、骶