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【单选题】
按探测器的警戒范围来分,开关式探测器属于 ()
A.
控制型探测器
B.
控制型探测器
C.
控制型探测器
D.
间控制型探测器
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举一反三
【单选题】PHP 语言中对 redis 进行写入和读取的语句为:
A.
$redis->set($row[ ‘ id ’ ],$row[ ‘ name ’ ]);  $redis->get($key);
B.
$redis->query($row[ ‘ id ’ ],$row[ ‘ name ’ ]);  $redis->set($key);
C.
$redis->set($row[ ‘ id ’ ],$row[ ‘ name ’ ]);  $redis->query($key);
D.
$redis->get($row[ ‘ id ’ ],$row[ ‘ name ’ ]);  $redis->set($key);
【简答题】_______ we are doing now has never been done before. A.That B.What C.Which D.Whether
【判断题】使用居民健康档案要保护服务对象个人隐私。( )
A.
正确
B.
错误
【单选题】Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.
A.
when
B.
that
C.
before
D.
since
【单选题】用漏光法检系统风管严密程度时,下列何项不符合规范规定?( )
A.
光源可置于风管内侧或外侧,但其对应侧应为黑暗环境
B.
若采用手持一定光源,可采用 220V 不低于 100W 带保护罩的照明灯
C.
漏光检测中,对发现的条缝漏光应做密封处理
D.
应采用具有一定强度的安全光源
【单选题】电路如图2所示,电压U等于( )
A.
2V
B.
-2V
C.
4V
D.
-4V
【单选题】电路如图2所示,电压U等于( )。【图片】
A.
2V
B.
-2V
C.
4V
D.
-4V
【判断题】种植是幼儿在原地自然角等种植花卉蔬菜和农作物的活动。
A.
正确
B.
错误
【单选题】听力原文:M: What are you doing? W: We are protesting against the odor that has been coming from your factory. M: You don't have to do this. Why didn't you just call me and arrange an appointment? I'm very...
A.
The profit-making activities of the company.
B.
The smell coming out from the factory.
C.
The suggestions made by the factory.
D.
The refusal of an appointment with the protesters.
【单选题】_____ we are doing has never been done before.
A.
That
B.
What
C.
Which
D.
Whether
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