漏缆在敷设过程中，严禁急剧弯曲。漏缆最小弯曲半径应大于漏缆外径的（）倍。
参考答案：20
-Is James at home?
-No, he __________ Ya'an to be a volunteer.
A. has gone to
B. has been to
C. is going to
D has to
单机带负荷运行，没有机组的负荷分配问题，故可将（）整定为零。
A.T
B.bp
C.bt
D.bp和bt
