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【单选题】
( )即万维网，是Internet上的一个超文本信息查询工具。A.
WWW
B.
HTTP
C.
TELNET
D.
FTP
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举一反三
【单选题】不具耐水性的涂料类墙面的清洁保洁作业程序一般为下面四点，那么，耐水性的涂料类墙面的清洁保洁作业程序与其相比较主要是第（）点不同。
A.
用掸子掸掉墙面的灰尘和蜘蛛网，应特别注意对边缘和角落位置的处理
B.
用干毛巾擦墙面上的污渍，若擦不掉则可试用橡皮、细砂纸轻轻擦掉，要注意掌握技巧，否则会留下痕迹
C.
墙面上沾有泥浆、痰迹等凸起的厚污垢，则可尝试用铲刀轻轻铲掉
D.
清洁好因清洁墙面而污染的地面
【单选题】The part of the sentence: his ability to provide competent daytime services 'was compromised' may mean______.
A.
his being unable to provide competent daytime services
B.
his ability to provide competent daytime services was discredited
C.
his qualification as a doctor was suspected
D.
his NHS practice is no more than a cheat to the patients
【单选题】在单相桥式整流电路中,为要在负载电阻R.上获得UO(AV)≈9V的输出电压平均值,应设计变压器副边电压有效值U2约为( )。
A.
10V
B.
4.5V
C.
7.5V
D.
9.5V
【单选题】The daytime of the summer is longer than _____ of the winter.
A.
it
B.
this
C.
that
D.
daytime
【单选题】Daytime running lights operate ________.
A.
Front parking lights
B.
Separate DRL lamps
C.
High beam headlights wired in series
D.
Any of the above
【单选题】Why did the bird never sing in the daytime? ( )
A.
Because she could only sing in the evening.
B.
Because there was nobody to listen to her.
C.
Because she was caught while singing in the daytime.
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