皮皮学，免费搜题
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【多选题】
标准文献的获取途径包括A.
用百度搜索
B.
接访问各国、各地区或行业标准网
C.
以上均可
D.
以上均非
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Have you kept in _______ with any of your friends from college?
A.
compare
B.
respond
C.
contact
D.
estimate
【简答题】(U1 Listening)Task 2 Mr. Black is registering at the hospital in person. Listen to the conversation and fill in the blanks with what you hear. Mr. Black: Good morning. Nurse: Good morning. Sorry to ha...
【简答题】当 时, 恰为函数 的全微分.
【单选题】Sorry to have kept you( ), but Mr. Drake is not in right now.
A.
wait
B.
to wait
C.
waiting
D.
waited
【单选题】I'm sorry ____ so long, I forgot to tell you in advance where I had put my key.
A.
to keep you wait
B.
to keep you waiting
C.
to keep you waited
D.
to have kept you waiting
【简答题】工业机器人可与外部设备集成为一个功能单元,例如 , , 等。
【单选题】Have you kept in contact _____your friends from high school?
A.
in
B.
on
C.
with
D.
down
【简答题】Mr. Black is registering at the hospital in person. Listen to the conversation and fill in the blanks with what you hear. Task 2.mp3: Mr. Black: Good morning. Nurse: Good morning. Sorry to have kept y...
【简答题】 Angels have nicknames to show their personalities and their goals for the future. 都市天使成员通过自己的绰号来 ( ) ,表明自己将来的目标。
【单选题】--Do you know Professor Yu, an outstanding expert in computers? --Exactly. But I _____ with him for about five years. A. have been in touch B. have lost touch C. have been out of touch D. ...
A.
B.
C.
D.
D
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