【单选题】听力原文:M: Excuse me, I'd like to send a registration letter to Houston, Texas. How much is the postage? W: Let me check. It's a dollar and 55 cents. Q: What is the probable relationship between the two ...
A.
Shop assistant and customer.
B.
Post clerk and customer.
C.
Store keeper and customer.
D.
Waitress and customer.
【多选题】根据违反法的种类不同,违法行为可以分为()。
【简答题】组蛋白是一类与染色体 DNA 结合的重要蛋白质,在这类蛋白质中 Arg 和 Lys 的百分含量很高( 15 ~ 30% )。试问测定组蛋白的序列是否容易?为什么?
【单选题】Speaker A: Excuse me. I'd like to exchange this watch. I just bought it, but look at this. Speaker B: ______
A.
Yes, I know your watch is new, but I like my old one better.
B.
What seems to be the problem?
C.
Thank you for your kindness, but my watch still works.
D.
Sorry. Why didn't you examine it carefully before you bought it?
【判断题】电子支付的广泛应用需要一些硬 件设备和软件等方面的技术支持
【单选题】听力原文:M: Excuse me. I'd like to place an advertisement for a used car in this Sunday's edition of your paper. W: OK, but you have to run your advertisement all week. We can't quote rates for just Sunda...
C.
At a publishing house.
【单选题】Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because ()
A.
bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversed
B.
bearing pressure in a two-stroke/cycle single acting diesel engine is continually reversed
C.
the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine
D.
two-stoke/cycle diesel engines require more complicated lubrication piping
【简答题】Excuse me, I'd like to this dress. I bought it yesterday.