以下文字与答案无关
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将数3以二进制输出串口监视器串口,程序Serial.println(3,format);中, format应为?( )
选项: A:BIN
B:OCT
C:HEX
D:DEC
A、the chronological format
B、the thematic format
C、the methodological format
val a = 3
B:val a:Double = 1 + 2
C:var a = 1; a += 2
D:val b = 1.+(2); val a = b.toInt
val
B:var
C:val1+2
D:val
Copier
B:Printer
C:Scanner
D:Display
val b= 2 * a // b 等于 Array(2,4,6)
B:val b = for(elem <- a if elem % 2 == 0) yield 2 * elem // b 等于 Array(4)
C:val b = for(elem <- a) yield 2 * elem // b 等于 Array(2,4,6)
D:val b = a.map(_*2) // b 等于 Array(2,4,6)
a is list
C:无输出
D:a is <class 'dict'>
">9.下面代码的输出结果是()。 a = {} if isinstance(a,list): print("{} is list".format(a)) else: print("{} is {}".format("a",type(a))) 选项: A:出错
B:a is list
C:无输出
D:a is <class 'dict'>
$( input name = username ]).val()
C:$("#username").val()
D:$("input")0].value
">10.HTML代码中出现了第一个文本框<input type="text" name="username" id="username">,使用jQuery选择器选取username文本框输入值的内容,代码正确的是 选项: A:$( :input name = username ]).val()
B:$( input name = username ]).val()
C:$("#username").val()
D:$("input")0].value
oct(10101)
B:int(0b10101)
C:int('0b10101')
D:bin(10101)
下列语句可以输出文字:“欢迎天问一号访问火星!”,代码:
who=“天问一号”
place=“火星”
print(“欢迎{}访问{}!”:format(who,place))
He was not well prepared.
B:He did not get to the exam in time.
C:He was not used to the test format.
D:He did not follow the test procedure.
m='apple'
for key in fruits.keys():
if fruitsm]<fruitskeys]:
m=key
print('{}:{}'.format(m,fruitsm]))
">16.输入字典fruits中键值最大的键值对,请完善代码fruits={"apple":10,"mango":12,"durian":20,"banana":5}
m='apple'
for key in fruits.keys():
if fruitsm]<fruitskeys]:
m=key
print('{}:{}'.format(m,fruitsm]))
TxD
B:RxD
C:nCTS
D:nRTS
RX
B:TX
C:GND
D:VCC