【单选题】录像机的电源系统的功能是将()的市电转换为合适的电压。
【单选题】机油呈褐色或乳白色并伴有泡沫,说明机油中( )。
【单选题】He is opposed (to) the project (for the reason) why it is not (feasible) (for the time being).
【单选题】对生活中的一些现象解释不正确的是( )
A.
厨房中没有抽油烟机,炒菜时房间内会闻到很大的油烟味,是因为分子在不断运动
B.
某同学用肥皂水洗衣服时,发现泡沫少浮渣多,是因为所用的水为硬水
D.
膨化食品开封一段时间后不再松脆,是因为吸收了空气中的水蒸气
【单选题】For the time bei ng , we'll let you stay on the job.
【单选题】S1:Is your washing finished?S2:It will be soon. It's now in the spin cycle.S1:I saw someone rinsing something under running water. Isn't that wasteful?S2:Yes.Even though we can get as much water as we...
A.
Rinse the clothes under running water.
B.
Use a little strong detergent.
C.
Use a lot of strong detergent
D.
Wash the clothes by hand.
【单选题】S1:Is your washing finished?S2:It will be soon. It's now in the spin cycle.S1:I saw someone rinsing something under running water. Isn't that wasteful?S2:Yes.Even though we can get as much water as we...
【单选题】图解中的运动方向是以图中人的躯干姿势为准,并且随着 所处的位置变化而变化。
【单选题】钢中含有少量的碳、硅、锰、硫、磷、氧和氮等元素,其中对钢的强度、硬度等性质起决定性影响的是 ( )。