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【单选题】
(布尔类型)为一个bool类型变量赋值时,可以使用( )方式。A.
bool a = 1;
B.
bool a = (9>=10);
C.
bool a = “真”;
D.
bool a = flas;
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举一反三
【单选题】设置 LED 灯亮语句( )。
A.
digitalWrite(LED,LOW)
B.
digitalRead(LED,HIGH)
C.
digitalWrite(LED,HIGH)
D.
digitalRead(LED,LOW)
【单选题】Among his criticisms, which he said _______ an indication of his experience over several months, he includes the train being dirty.
A.
was
B.
were
C.
being
D.
been
【单选题】－The train is leaving right now, but David hasn't arrived yet. －Well, he said he here on time. [ ]
A.
came
B.
will be C．would come D. can be
【单选题】—The train is leaving right now, but David hasn't arrived yet. —Well, he said he ____ here on time. [ ]
A.
came
B.
will be
C.
would come
D.
can be
【简答题】红色叉形灯或者箭头灯亮时表示什么?
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