单项选择题
A.out of accordance with
B.in relation to
C.in conformity with
D.in connection with
单项选择题 Keep compartment （） as the gas given off can be dangerous.
单项选择题 Bridge orders must be （） and a record of any required changes in speed and direction should be kept.
单项选择题 When under maneouvring conditions with the machinery being manually operated the control unit or console should be （）