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【单选题】
在串行通信中, 8051中发送和接收的方式设置寄存器是( ) 。A.
TMOD
B.
SBUF
C.
SCON
D.
DPTR
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反馈参考答案：
举一反三
【单选题】下列关于人类海洋病原体的陈述哪项是不正确的?
A.
大多数海洋微生物均为人类病原体
B.
弧菌是人类主要的致病菌
C.
霍乱弧菌引起急性腹泻病，死亡率高
D.
霍乱弧菌毒素是由噬菌体编码的
【单选题】Which statement is TRUE about the p K a values for ionizable R-group of amino acids within a polypeptide?
A.
The p K a values for R-groups do not change from free amino acids.
B.
The p K a values for R-groups are 1 pH unit higher than free amino acids.
C.
The p K a values for R-groups are 1 pH unit lower than free amino acids.
D.
The p K a values for R-groups vary depending on the local environment of the side chain.
E.
The p K a values for R-groups depend on how close the R-group is to the N- or C-terminus of the polypeptide.
【单选题】听力原文：W Hello, I'd like to donate some old clothes. Is there anything I need to do? M Well, you need to take them to the side door, which should be open. If you don't see anyone working there, just rin...
A.
Try on a skirt
B.
Make a donation
C.
Apply for a job
D.
Buy some furniture
【单选题】Which side is K on, the government or the rebels?
A.
The government militants
B.
The rebels
C.
The camp
D.
None of the above
【单选题】We just go on in our habitual ways until we are stopped short by one of the many illnesses that ________ our civilization today.
A.
occur
B.
effect
C.
afflict
D.
exist
【单选题】请选择恰当选项将句子补充完整:甲:ゴールデンウイークにどこかへ行きますか。 乙:今_ところです。どこがいいでしょうか。
A.
考える
B.
考えた
C.
考えている
D.
考えて
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