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A、B两台PC机利用辅串口进行有联络线的点-点通信，A机发送，B机接收，现已知A机的通信速率被设定为2400波特（对应分频系数为0030H），要求一帧字符7个数据位，2个停止位，偶校验。程序填空：为B机的辅串口写一个初始化程序段，使得B机能以查询方式正确接收到来自A机的数据，接收前，B机需要先和A机联络。 MOV DX,2FBH MOV DX,2FBH MOV AL, 1MOV AL, 2 OUT DX, AL OUT DX, AL MOV DX,2F9H MOV DX, 2F9H MOV AL, 0MOV AL, 3 OUT DX, ALOUT DX, AL MOV DX,2F8HMOV DX, 2FCH MOV AL, 30HMOV AL, 4 OUT DX, ALOUT DX, AL程序段中，空1应该填 。
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举一反三
【单选题】– Hi, Peter. How is your work getting along? – Very well. Everything is going on according to ______.
A.
schedule
B.
forecast
C.
expression
D.
accent
【简答题】针对矿石中元素赋存状态的研究,通常有哪些方法。
【单选题】—Hi, Jim. I haven't seen you for a long time! You look well! —_______. You look well, too. [ ]
A.
Great
B.
Thanks
C.
Oh, no
D.
Not at all
【单选题】-----Hi, I haven’t seen you for years. You look well. -----________. You look well, too.
A.
Great
B.
Thanks
C.
Oh, no.
D.
Not at all
【单选题】听力原文：M: Hi, Claire. How does it feel to be back on campus? W: Keith, hi. Well, to tell you the truth, I have mixed feelings. M: Oh, why? W: I had this great summer job that I really hated to leave. I ...
A.
The birds won't learn to keep away from people.
B.
She might change her major.
C.
There are more endangered species in zoos than in the wild.
D.
She wasn't quite ready to come back to campus.
【简答题】氟利昂制冷剂的分子通式?命名规则是?
【单选题】听力原文：M: Hi, Claire. How does it feel to be back on campus? W: Gee, Hi, well, to tell you the truth, I have mixed feelings. M: Oh, why? W: I have this great summer job that I really hated to leave. I w...
A.
She wasn't quite ready to come back to campus.
B.
There are more endangered species in zoos than in the wild.
C.
The birds won't learn to keep away from people.
D.
She might change her major.
【单选题】听力原文：M: Hi, Claire. How does it feel to be back on campus? W: Gee, Hi, well, to tell you the truth, I have mixed feelings. M: Oh, why? W: I have this great summer job that I really hated to leave. I w...
A.
She wasn't quite ready to come back to campus.
B.
There are more endangered species in zoos than in the wild.
C.
The birds won't learn to keep away from people.
D.
She might change her major.
【单选题】听力原文：M: Hi, Mary. W: Hi, Thomas. What's happening? M: Well, I've decided I have to get a car. W: You're going to buy a car? Do you really need one? I'd probably still be driving except that my car bro...
A.
He uses it for his job.
B.
He spends too much time on the bus.
C.
He lives too far from the university.
D.
He would feel safer at night with a car.
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