铁塔的接地电阻值与下列哪些因素有关（）。
A. 接地体的构成材料
B. 接地体的表面积
C. 接地体的布置方式
D. 大地导电率
既能止痛，又能利水的祛风湿药是（）
A. 防己
B. 秦艽
C. 桑寄生
D. 五加皮
E. 蕲蛇
（）ofthefollowingneednotbeenteredintheofficiallogbook?
A. Thetestingoftheinternalcombustionenginedrivenemergencygeneratoratleastonceeachmonththevesselisnavigated
B. Thetestingofstoragebetteriesforemergencylightingandsystemsonceeach6monthsthevesselsisnavigated
C. Theactualdraftwhenthevesselarrivesinsaltwaterafterdepartmentaport
D. Thetestingoftheline-throwingapplianceonceevery3months
（）itraintomorrowmorning,theloading（）.
A. Should/willbepostponed
B. If/shallbepostponed
C. Should/wouldbepostponed
D. If/hastobepostponed
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