用NA表示阿佛加德罗常数的值，下列说法中正确的是 A．一定条件下，2.3g的Na

根据中文提示，用词组的适当形式填空，每空一词。(每小题1分，共5分)

小题1:It's bad behavior to spit ___________ ____________ (当众).

小题2:Grandma usually ___________ __________ (醒来)early in the morning.

小题3: His parents are ___________ __________ (对严格要求) him.

小题4: Remember to ___________ __________ (关掉)the tap when you are not using it.

小题5:___________ __________ (刚才), my teacher told me to pay attention to my handwriting.

铲窝平整度的要求是什么？

“青如玉、明如镜、声如磬”是景德镇瓷器的独特风格。

备用信用证一般不用于易货贸易与来料加工和补偿贸易业务。 ( )

MR一般上报（）个最强邻区

A.6

B.3

C.5

D.4