【单选题】为了是彩妆化妆品能够吸收汗也和皮脂,可以加入下列那种原料( )。
【单选题】关于线路纵断面图中的线路平面,错误的描述是( )。
B.
上凸表示该线为左转向角,下凹表示该线为右转向角
C.
上凸、下凹的转折处依次为直缓点、缓圆点、圆缓点和缓直点
【判断题】distributorless ignition system无分电器点火系统的翻译是否正确?
【单选题】电控发动机可用 ( ) 检查发动机是否有故障
【单选题】In a distributorless ignition system, the spark plugs are fired directly from the ______.
【简答题】纵断面图中 上凸表示该线为( )转曲线。
【单选题】Disastrous forest fires are quite often caused by carelessness: a dropped butt ignites dead leaves.
【单选题】In order for the automatic lifeboat drain to operate properly().
A.
the cap should be removed to drain the boat when it is waterborne
B.
the cage must be free of rubbish or the ball may not seat properly
C.
there is an automatic ball check located in a siphon tube
D.
the small lever to release the rubber ball float must be turned counterclockwise
【单选题】照护人员给受伤的老年人包扎止血,不能用的材料是