【简答题】有9袋糖果,其中的8袋质量相同,只有1袋少装了几块,如果能用天平称,至少______次一定能找出这袋糖果.
【单选题】Choose the sentence which doesn’t refer to dinner phenomenon?
A.
We are at your disposal
B.
How much duty should I pay on these cigarettes ?
D.
They look really inviting.
【简答题】有8瓶药,其中七瓶质量相同,另有一瓶少5粒,用天平称至少称______次能把这瓶药找出来.
【简答题】有8个球,其中一个轻一点,把这些球放在天平上称几次,能找出轻的球,写出方法?
【单选题】运行中司机发现机车信号与地面列车信号机显示不符,若机车信号降级(黄灯)显示时,应按照( )的显示要求运行。
【简答题】有8瓶药,其中有一瓶少5粒,用天平称至少称()次能保证把这瓶要找出来。
【判断题】连续式机车信号机显示一个红色灯光,表示列车接近的地面信号机显示红色灯光。
【单选题】Choose the sentence which doesn’t refer to dinner phenomenon?
A.
We are at your disposal.
C.
How much duty should I pay on these cigarettes?
D.
They look really inviting.
【单选题】—Thank God we’ve finally cleared up some problems. Let’s ______, shall we? ——All right. See you tomorrow.