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【单选题】
(2011年) 6个月以内小儿较少患传染病的主要原因是从母体内获得了A.
IgA
B.
IgD
C.
IgE
D.
IgG
E.
IgM
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反馈参考答案：
举一反三
【判断题】import threadingimport timeimport randomdef reading(): for i in range(5): print("reading",i) time.sleep(random.randint(1,2))def test(): r=threading.Thread(target=reading) r.setDaemon(True) r...
A.
正确
B.
错误
【单选题】If the "++" in the expression ++a is an operator overloaded as a member function, the operator function call format can be expressed as ()
A.
a.o perator++ (1)
B.
operator++ (a)
C.
operator++ (a, 1)
D.
a.operator++ ()
【单选题】Which maintenance functions can a GMDSS Radio Operator perform ________．
A.
The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B.
The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C.
All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D.
The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
【单选题】计算机中的木马病毒，是指通过特定的程序（木马程序）来控制另一台计算机。下列关于“木马”的说法，错误的是（）。
A.
“木马”不会自我繁殖
B.
“木马”具有很强的隐蔽性
C.
“木马”是一种病毒，与一般的计算机病毒无异
D.
“木马”通常有控制端和被控制端这两个执行程序
【单选题】By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine The device most commonly used is a
A.
tachometer
B.
pyrometer
C.
dynamometer
D.
calorimeter
【多选题】关于木马病毒下列说法正确的是（）。
A.
病毒以TROJ开头
B.
是一种基于远程控制的黑客软件，具有隐蔽性和非授权的特点
C.
绝大多数木马病毒具有疯狂的“传染性”，可以通过不断的复制自身，造成大规模、集中的病毒爆发
D.
目前流行的“AV杀手”病毒，就是一种木马病毒
【简答题】Sentencs arrangement. 1. We would appreciate it if you could give us a prompt reply. 2. We'd like to know whether this product is available. 3. If possible, we are going to import 3,000 sets in the co...
【单选题】Messages can easily be sent from one operator to another as long as they share the same data store,
A.
have
B.
type
C.
email
D.
store
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