关于safety&healthy说法正确的是（）

[单选题]上站时（）人需要关注healthy and safety。A . 所有上站的人都需要关注B . PM指定的人C . 三方的人D . 获得healthyandsafety方面认证的人

[单选题]Safety valve的意思是（）。A .安全卡瓦B .安全阀C .安全接头D .安全开关

[单选题]safety beltA．安全带B．安全帽C．救生衣D．安全网

[单选题]safety netA．安全措施B．安全网C．安全帽D．安全防护

[单选题]Industrial safety does not just happen.Companies with low accident rates pl

[单选题]E．quipment not ______ official safety standards has all been removed from the workshop.A． conforming to B consistent with C predominant over D providing for

[单选题]F．or the sake of the safety, many parents send their kids to school ________.A． by carB． by busC． by trainD． by public transport

[单选题]Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.A . increasing the volume of intake airB . shutting off the fuel supplyC . increasing the engine back pressureD . over-speeding the engine

[单选题]The purpose of the safety relief valves installed on an auxiliary boiler is to （）.A . relieve excess fuel oil pressure during the “off” fire cycleB . admit water to the dry pipeC . throttle the forced draft fan output for proper combustio

[单选题]In order to ensure the safety of the ship and its equipment during UMS operation, certain essential functions （）.A . must be providedB . may be providedC . have providedD . can be provided