喷淋降温装置在（）油罐应用得十分普遍。
A、北方
B、南方
C、柴油
D、润滑油
参考答案：B
The actress received an award for her ________ to charity work.
A．addiction
B．devotion
C．allowance
D．application
骨髓瘤好发于下列哪些部位（）
A.肱骨
B.脊椎
C.肋骨
D.骨盆
E.胸骨
