c¡¢NOT d¡¢OR ±ê×¼´ð°¸:b
¼ìË÷¹¤¾ß°´Öø¼·½Ê½»®·Ö£¬Ö÷ÒªÓУº Ñ¡Ïî:
a¡¢Ö÷Ìâ¡¢ÖøÕß¡¢ÊéÃûĿ¼
b¡¢×ÛºÏÐÔ¡¢×¨ÒµÐÔ¡¢×¨ÌâÐÔ¼ìË÷¹¤¾ß c¡¢Ä¿Â¼¡¢Ë÷Òý¡¢ÎÄÕª¡¢ÊéÄ¿Ö®ÊéÄ¿ d¡¢ÊÖ¹¤¼ìË÷¹¤¾ß¡¢¼ÆËã»ú¼ìË÷¹¤¾ß ±ê×¼´ð°¸:c
ÔÚCMCCÊý¾Ý¿âÖУ¬Í¨Åä·û\£¿\±íʾ£¨£©¡£ Ñ¡Ïî:
a¡¢Ò»¸ö×Ö·û b¡¢Ò»¸öºº×Ö c¡¢¶þ¸ö×Ö·û d¡¢0-n¸ö×Ö·û ±ê×¼´ð°¸:a
Ä¿Ç°£¬CAÊý¾Ý¿âÌṩ¼¸ÖÖ»ù±¾¼ìË÷;¾¶¡£ Ñ¡Ïî: a¡¢1 b¡¢2 c¡¢3 d¡¢4
Ä¿Ç°¹úÄÚÖªÃûµÄÈ«ÎÄÐ͵ç×ÓÆÚ¿¯Êý¾Ý¿âÊÇ£º
Ñ¡Ïî:
a¡¢ÖйúÉúÎïҽѧÎÄÏ×Êý¾Ý¿â
b¡¢Öйú¿Æѧ¼¼Êõ³É¹ûÊý¾Ý¿â
c¡¢ÖйúѧÊõÆÚ¿¯Êý¾Ý¿â
d¡¢ÖйúÉúÎïѧÎÄÏ×Êý¾Ý¿â
±ê×¼´ð°¸:c
ÌṩÔçªÎÄÏ×ÏßË÷µÄ¼ìË÷¹¤¾ßÓУº
Ñ¡Ïî:
a¡¢ÆÚ¿¯Ä¿Â¼
b¡¢¶þ´ÎÎÄÏ×Êý¾Ý¿â
c¡¢²Î¿¼ÎÄÏ×
d¡¢Í¼Êé·ÖÀà·¨
±ê×¼´ð°¸:b
ÈçÓÃCBMdisc¼ìË÷¡°ÐÂÉú¶ùÖÏÏ¢µÄÖÎÁƺͻ¤Àí·½ÃæµÄÎÄÏ×£¬ÏÂÁÐÄĸö¼ìË÷ʽµÄ²é×¼Âʽϸߡ£
Ñ¡Ïî:
a¡¢ÐÂÉú¶ùÖÏÏ¢ AND £¨»¤Àí AND ÖÎÁÆ£©
b¡¢ÐÂÉú¶ù AND ÖÏÏ¢ AND »¤Àí AND ÖÎÁÆ
c¡¢ÖÏÏ¢£¬ÐÂÉú¶ù/»¤Àí£¬ÖÎÁÆ
d¡¢ÖÏÏ¢£¬ÐÂÉú¶ù AND »¤Àí OR ÖÎÁÆ
±ê×¼´ð°¸:c
ÔÚÏÂÁÐÊý¾Ý¿âÖÐÓС°EC¡±×Ö¶ÎÃûµÄÊÇ£º
Ñ¡Ïî:
a¡¢MEDLINE
b¡¢BIOSIS
c¡¢EMbase
d¡¢CBMdisc
±ê×¼´ð°¸:c
´ðÌâ½á¹û:ÕýÈ·
¶àÑ¡Ìâ
Ç鱨¼ìË÷ÓïÑÔ³£ÓõÄÓÐÁ½À࣬¼´£º
Ñ¡Ïî:
a¡¢Ö÷ÌâÓïÑÔ
b¡¢·ÖÀàÓïÑÔ
c¡¢Ë÷ÒýÓïÑÔ
d¡¢×¢ÊÍÓïÑÔ
±ê×¼´ð°¸:ab
MEDLINEÖУ¬ÓÃPART£ªÄܼìË÷µ½£º
Ñ¡Ïî:
a¡¢PART
b¡¢PARTY
c¡¢PARTS
d¡¢PARTIAL
±ê×¼´ð°¸:abcd
ÔÚCBMdiscÖУ¬Òª²é³ÂóõÄÎÄÏ×£¬ÕýÈ·µÄÊÇ£º
Ñ¡Ïî:
a¡¢³Âóà IN AU
b¡¢AU=³ÂóÃ
c¡¢CHEN-Z IN AU
d¡¢AU=CHEN-Z
±ê×¼´ð°¸:ab
´ÓÎïÀí¹¹³É½Ç¶ÈÀ´¿´£¬¼ÆËã»ú¼ìË÷ϵͳһ°ãÓÉÏÂÁÐÄÄЩ²¿·Ö×é³É¡£
Ñ¡Ïî:
a¡¢Ó¦ÓÃÈí¼þ
b¡¢Ó¦ÓÃÓ²¼þ
c¡¢Êý¾Ý¿â
d¡¢ÐÅϢϵͳ
±ê×¼´ð°¸:abc
ÔÚÏÂÔØ»òÌ×¼¼ìË÷½á¹ûʱ£¬Ó¦×¢ÒâÏÂÁÐÄÄЩÎÊÌâ¡£
Ñ¡Ïî:
a¡¢Ñ¡ÔñÄ¿±êλÖÃ
b¡¢Ñ¡ÔñÌ×¼²ÎÊý
c¡¢Ñ¡ÔñÊý¾Ý¿â
d¡¢Ñ¡Ôñ±£´æ¸ñʽ
±ê×¼´ð°¸:abd
ÔÚOVID¼ìË÷ϵͳµÄCOMBINE¼ìË÷ÖУ¬Ö»ÓÐÏÂÁÐÄļ¸¸öÑ¡Ïî¡£
Ñ¡Ïî:
a¡¢AND
b¡¢OR
c¡¢NOT
d¡¢IN
±ê×¼´ð°¸:ab
ÎÄÏ×¼ìË÷Ч¹ûµÄÖ÷ÒªÖ¸±êÊÇ£º
Ñ¡Ïî:
a¡¢ÊÕ¼·¶Î§
b¡¢²éÈ«ÂÊ
c¡¢Óû§¸ºµ£
d¡¢²é×¼ÂÊ
±ê×¼´ð°¸:bd
ÔÚCBMÖУ¬ÓÃÖ÷Ìâ;¾¶¼ìË÷\¸Î°©ÓëÒÒÐ͸ÎÑ×Ïà¹ØÐÔÑо¿\·½ÃæµÄÎÄÏ×£¬Ó¦Ñ¡ÓõļìË÷ʽÊÇ£º
Ñ¡Ïî:
a¡¢¸ÎÑ×£¬ÒÒÐÍ/²¢·¢Ö¢
b¡¢¸ÎÑ×£¬ÒÒÐÍ/²¡¶¾Ñ§
c¡¢¸ÎÖ×Áö/²¡Òòѧ
d¡¢¸ÎÖ×Áö²¡/Àíѧ
±ê×¼´ð°¸:ac
ÏÂÁÐÄÄЩÊÇEMÖ÷Ìâ´ÊµÄÌص㣺
Ñ¡Ïî:
a¡¢¹æ·¶»¯³Ì¶È¸ß
b¡¢¶à²ÉÓõ¥ÊýÐÎʽ
c¡¢ÎÞµ¹ÖÃÐÎʽ
d¡¢ÓÐÖ÷Ìâ´ÊºÍ¸±Ö÷Ìâ´Ê
±ê×¼´ð°¸:bc
ÔÚ»ú¼ìÖÐ,ËõС¼ìË÷·¶Î§µÄ¼ìË÷·½Ê½ÊÇ£º
Ñ¡Ïî:
a¡¢ÓÃANDÁ¬½Ó¼ìË÷´Ê