单项选择题
A.failure of the proper operation of the main steering gear
B.failure of the proper operation of electrical installations
C.leakage of domestic water pump
D.insulation of exhaust pipes in engine room contaminated by oil
单项选择题 During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）
单项选择题 During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）
单项选择题 During the PSC inspection under the provision of SOLAS 74, which one may be regarded as clear grounds for ships’ detainment?（）