颈深淋巴结上、下群的分界是()。
A.舌骨水平
B.颈动脉分叉处
C.二腹肌中间腱
D.肩胛舌骨肌中间腱
E.肩胛舌骨肌与颈内静脉交叉处
参考答案:E
— When did you get home last Friday?
— It was not until midnight ______ it was raining hard. [ ]
A. when
B. which
C. before
D. that
一般来说,塔式起重机的起重量和起重力矩随幅度增大而减小。最大起重量受()等强度与能力的影响。