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【判断题】
在测定微波折射率时,关键性的参数是水汽分压的测定。同光波相比可知,水汽压对微波折射率的影响是光波的100倍,即高出2个数量级。所以,与光波测距不同,在微波测距中必须沿整条测线十分精确地测定湿度。即便是这样,好于±3ppm的精度也是很困难的,所以微波测距精度一般都低于光波测距精度。A.
正确
B.
错误
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【单选题】Do you mean this is the ______ decision you have made after thinking for hours?
A.
upright
B.
ultimate
C.
total
D.
tight
【简答题】After you have made the shipment of goods, you are supposed to write a letter to inform the buyer of the news and tell him/her of the documents your are sending over: B/L, commercial invoice, certif...
【判断题】After you have made a business plan, the first thing you should do is to put it into practice immediately.
A.
正确
B.
错误
【单选题】your papers and see how many mistakes you have made. [ ]
A.
Look through
B.
Look after
C.
Look for
D.
Look into
【判断题】Someone said " Sorry, but I already have another appointment." after you had made an invitation. It means he declined your invitation politely. ( )
A.
正确
B.
错误
【简答题】在贷款活动中，货币的贷出者成为债权人，借入者则成为（）。
【单选题】After you have made purchases, you should
A.
send an email to merchants.
B.
look for more product information.
C.
check confirmation emails.
D.
change your credit card.
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