t(11;22)(q24;q12)多存在于
A.良性骨肿瘤B.恶性骨肿瘤C.有恶性倾向的良性骨肿瘤D.骨瘤样病变E.继发性骨肿瘤
参考答案:C
What________it is to travel around the world by sea![ ]
A.a fun
B.pleasure
C.fun and a pleasure
D.a fun and a pleasure
变压器室位于容易沉积可燃粉尘、可燃纤维的场所时,可燃油油浸电力变压器室应设置容量为( )变压器油的挡油设施,或设置容量为( )变压器油量挡油池并能将油排到安全处的设施。
A.80%,20%
B.90%,20%
C.100%,20%
D.90%,40%