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【单选题】
人耳朵能听到的声音频率范围A.
20-200hz
B.
20-2000hz
C.
20-20000hz
D.
20-200000hz
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should_____.
A.
notify the terminal superintendent
B.
place a large drip pan under the leak and ping the scuppers
C.
repair the hose with a patch
D.
replace the hose
【单选题】____, follow the directions on the bottle carefully.
A.
When taken drugs
B.
When taking drugs
C.
When one takes drugs
D.
When to take drugs
【单选题】Internet shopping is really ____ when people are sure of its safety.
A.
taking off
B.
taking up
C.
setting up
D.
setting off
【单选题】在利用常染色体遗传标记分析进行亲子鉴定时，只有（ ）微卫星DNA遗传标记检测不符，才能否定父权。
A.
1 个或以上
B.
2 个或以上
C.
3 个或以上
D.
4 个或以上
【简答题】According to ____________ of articulation, consonants can be divided into stop consonants, fricative consonants ...
【简答题】According to the ____________ of articulation, consonants can be divided into bilabial consonants, alveolar consonants ...
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