绶ㄨ集鎺ㄨ枽锛�2019骞寸挵(hu谩n)澧冨奖闊胯⿻鍍瑰斧銆婂皫(d菐o)鍓囪垏妯�(bi膩o)婧�(zh菙n)銆嬬湡椤屽強瑙ｆ瀽鍖附

71.鏍规摎(j霉)銆婂ぇ姘ｆ薄鏌撶墿缍滃悎鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�锛岄棞(gu膩n)浜庢帓姘ｇ瓛楂樺害鍙婃帓鏀鹃€熺巼鐨勬湁闂�(gu膩n)瑕�(gu墨)瀹氾紝涓嬪垪瑾硶姝ｇ⒑鐨勬槸()銆�

A.鎺掓埃绛掗珮搴﹀繀闋堥珮鍑哄懆鍦� 200 绫冲崐寰戣寖鍦嶇殑寤虹瓚 5 绫充互涓�

B.姘ｇ瓛楂樺害鎳�(y墨ng)楂樺嚭鍛ㄥ湇 200 绫冲崐寰戣寖鍦嶅収(n猫i)鐨勫缓绛� 3 绫充互涓婏紝涓嶈兘閬�(d谩)鍒拌┎瑕佹眰鐨勬帓姘ｇ瓛锛屾噳(y墨ng)鎸夊叾楂樺害灏嶆噳(y墨ng)鐨勮〃鍒楁帓鏀鹃€熺巼妯�(bi膩o)婧�(zh菙n)鍊煎毚(y谩n)鏍� 50%鍩�(zh铆)琛�

C.鏂版薄鏌撴簮鐨勬帓姘ｇ瓛涓€鑸笉鎳�(y墨ng)浣庝簬 15 绫�

D.鑻ユ柊姹℃煋婧愮殑鎺掓埃绛掑繀闋堜綆浜� 15 绫虫檪锛屽叾鎺掓斁閫熺巼妯�(bi膩o)婧�(zh菙n)鍊兼寜澶栨帹瑷堢畻绲�(ji茅)鏋�

72.鏍规摎(j霉)銆婂ぇ姘ｆ薄鏌撶墿缍滃悎鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�锛屼互涓嬪伐妤�(y猫)榛炴簮椤嗙矑鐗╂帓鏀炬噳(y墨ng)鍩�(zh铆)琛屻€婂ぇ姘ｆ薄鏌撶墿缍滃悎鎺掓斁妯�(bi膩o)婧�(zh菙n)銆嬬殑鏄�()銆�

A.鐏浕寤犵鐓ゆ(j墨)闆嗗〉鎺掓埃绛�

B.鍗�(xi茅)鍚岃檿缃敓娲诲瀮鍦剧殑姘存偿绐帓姘ｇ瓛

C.闄剁摲闅ч亾绐厵鍥�

D.姘存偿寤犲洖杞�(zhu菐n)绐帓姘ｇ瓛

73.鏍规摎(j霉)銆婃薄姘寸稖鍚堟帓鏀炬(bi膩o)婧�(zh菙n)銆�锛岄棞(gu膩n)骞叉寜姹℃煋鐗╂寜鎬ц唱(zh矛)鍙婃帶鍒舵柟寮忛€�(j矛n)琛岀殑鍒嗛锛屼笅鍒楄娉曢尟瑾ょ殑鏄�()銆�

A.鍚妳寤㈡按涓€寰嬪湪杌婇枔鎴栬粖闁撹檿鐞嗚ō(sh猫)鏂芥帓鏀惧彛閲囨ǎ

B.鍚幊寤㈡按涓€寰嬪湪杌婇枔鎴栬粖闁撹檿鐞嗚ō(sh猫)鏂芥帓鏀惧彛閲囨ǎ

C.鍚妧寤㈡按涓€寰嬪湪杌婇枔鎴栬粖闁撹檿鐞嗚ō(sh猫)鏂芥帓鏀惧彛閲囨ǎ

D.鍚尦寤㈡按鍦ㄦ帓姹″柈浣嶆帓鏀惧彛閲囨ǎ

74.鏍规摎(j霉)銆婃薄姘寸稖鍚堟帓鏀炬(bi膩o)婧�(zh菙n)銆�锛屼笉灞簬绗竴椤炴薄鏌撶墿鐨勬槸()

A.鐑峰熀姹�

B.绺界牱

C.鑻苟[a]鑺�

D.鎻櫦(f膩)閰�

75.闂�(gu膩n)浜庛€婂缓绛戞柦宸ュ牬鐣岀挵(hu谩n)澧冨櫔鑱叉帓鏀炬(bi膩o)婧�(zh菙n)銆嬮仼鐢ㄨ寖鍦嶇殑瑾硶锛屾纰虹殑鏄�()銆�

A.妯�(bi膩o)婧�(zh菙n)閬╃敤浜庢惗淇�銆佹惗闅柦宸ラ亷绋嬬敘(ch菐n)鐢熷櫔鑱茬殑绠＄悊

B.妯�(bi膩o)婧�(zh菙n)閬╃敤浜庡凡绔ｅ伐浜や粯浣跨敤鐨勪綇瀹呮〒閫�(j矛n)琛屽鍏�(n猫i)瑁濅慨娲诲嫊鐢�(ch菐n)鐢熷櫔鑱茬殑绠＄悊

C.甯傛斂銆侀€氫俊銆佷氦閫�銆佹按鍒╃瓑鍏朵粬椤炲瀷鐨勬柦宸ュ櫔鑱叉帓鏀惧彲鍙冪収鏈(bi膩o)婧�(zh菙n)鍩�(zh铆)琛�

D.妯�(bi膩o)婧�(zh菙n)涓嶉仼鐢ㄨ垏杈�(n贸ng)鏉戝湴鍗€(q奴)鍛ㄥ湇鏈夊櫔鑱叉晱鎰熷缓绛戠墿鐨勫缓绛戞柦宸ュ櫔鑱叉帓鏀剧殑绠＄悊

76.鏌愰爡鐩柦宸ュ牬鍦颁竴鍋�(c猫)绶婅嚚灞呮皯浣忓畢鍗€(q奴)(璺濋洟灏忎簬 1m)锛岄爡鐩柦宸ユ檪瑭蹭綇瀹�(鍙楁柦宸ュ櫔鑱插奖闊挎柟鍚戠獥鎴堕枊鍟熸檪)瀹ゅ収(n猫i)鏅濆绛夋晥鑱茬礆鐐� 63dB(A)銆佸闁撴渶澶ц伈绱氱偤 58dB(A)銆傛牴鎿�(j霉)銆婂缓绛戞柦宸ュ牬鐣岀挵(hu谩n)澧冨櫔鑱叉帓鏀炬(bi膩o)婧�(zh菙n)銆�锛岄棞(gu膩n)浜庤┎灞呮皯浣忓畢铏曟柦宸ュ牬鐣屽櫔鑱叉帓鏀鹃仈(d谩)妯�(bi膩o)鎯呮硜鐨勮娉�锛屾纰虹殑鏄�()

A.鏅濋枔绛夋晥鑱茬礆瓒呮(bi膩o)銆佸闁撴渶澶ц伈绱氳秴妯�(bi膩o)

B.鏅濋枔绛夋晥鑱茬礆閬�(d谩)妯�(bi膩o)銆佸闁撴渶澶ц伈绱氶仈(d谩)妯�(bi膩o)

C.鏅濋枔绛夋晥鑱茬礆瓒呮(bi膩o)銆佸闁撴渶澶ц伈绱氶仈(d谩)妯�(bi膩o)

D.鏅濋枔绛夋晥鑱茬礆閬�(d谩)妯�(bi膩o)銆佸闁撴渶澶ц伈绱氳秴妯�(bi膩o)

77.鏌愪紒妤�(y猫)鍖楀伌(c猫).鏉卞伌(c猫)鐒″櫔鑱叉晱鎰熷缓绛戠墿锛屽崡鍋�(c猫)寤犵晫 15m 铏曟湁涓€鏉戣帄锛屼紒妤�(y猫)寤犵晫铏曞缓鏈� 2.5m 楂樺湇澧�;瑗垮伌(c猫)寤犵晫铏曡ō(sh猫)鏈� 6m 楂樿伈灞忛殰锛岃┎鍋�(c猫)寤犵晫澶� 15m 铏曟湁涓€灞呮皯浣忓畢銆傛牴鎿�(j霉)銆婂伐妤�(y猫)浼佹キ(y猫)寤犵晫鐠�(hu谩n)澧冨櫔鑱叉帓鏀炬(bi膩o)婧�(zh菙n)銆�锛岄棞(gu膩n)浜庡粻鐣屽櫔鑱叉脯榛炲竷瑷�(sh猫)鐨勮娉曪紝姝ｇ⒑鐨勬槸()

A.鍖楀伌(c猫)寤犵晫娓粸閬稿湪寤犵晫澶� 1m銆侀珮搴� 1.2m 浠ヤ笂銆佽窛浠讳竴鍙嶅皠闈㈣窛闆笉<1m 鐨勪綅缃�

B.鏉卞伌(c猫)寤犵晫娓粸閬稿湪寤犵晫澶� 1m銆侀珮搴� 1.2m 浠ヤ笂銆佽窛浠讳竴鍙嶅皠闈㈣窛闆笉<1m 鐨勪綅缃�

C.鍗楀伌(c猫)寤犵晫娓粸閬稿湪寤犵晫澶� 1m銆侀珮浜庡湇澧� 0.5m 浠ヤ笂鐨勪綅缃�

D.瑗垮伌(c猫)寤犵晫娓粸閬稿湪寤犵晫澶� 1m銆侀珮搴﹀湪 0.5m 浠ヤ笂鐨勪綅缃�锛屽悓鏅傝┎鍦ㄤ綇瀹呭 1m 铏曞彟瑷�(sh猫)娓粸

78.鏌愭瓕鑸炲怀閭婄晫鑳屾櫙鍣伈鍊肩偤 63dB锛屾甯哥嚐妤�(y猫)鏅傚櫔鑱叉脯閲忓€肩偤 67dB銆傛牴鎿�(j霉)銆婄ぞ鏈冪敓娲荤挵(hu谩n)澧冨櫔鑱叉帓鏀炬(bi膩o)婧�(zh菙n)銆�锛岀⒑瀹氳┎姝岃垶寤虫墍鍦ㄩ倞鐣岃檿鎺掓斁鐨勫櫔鑱茬礆鏅�锛屾脯閲忕祼(ji茅)鏋滅殑淇瑕佹眰鏄�()銆�

A.鐒￠渶淇

B.淇鍊肩偤-2dB

C.淇鍊肩偤-3dB

D.鎳�(y墨ng)閲囧彇鎺柦闄嶄綆鑳屾櫙鍣伈鍚庨噸鏂版脯閲�锛屽啀鎸夎姹傞€�(j矛n)琛屼慨姝�

79.鏍规摎(j霉)銆婃儭鑷薄鏌撶墿鎺掓斁妯�(bi膩o)婧�(zh菙n)銆嬶紝鎺掓斁鍠綅鎺掓斁(鍖呮嫭娉勯湶鍜岀劇绲勭箶鎺掓斁)鐨勬儭鑷薄鏌撶墿锛屽湪鎺掍綅鍠綅閭婄晫涓婅(gu墨)瀹氱洠(ji膩n)娓粸(鐒″叾浠栧共鎿惧洜绱�)鐨�()閮藉繀闋堜綆浜庢垨绛変簬鎯¤嚟姹℃煋鐗╁粻鐣屾(bi膩o)婧�(zh菙n)鍊笺€�

A.鏈堝钩鍧囩洠(ji膩n)娓€�

B.鐩�(ji膩n)娓附鏁�(sh霉)骞冲潎鐩�(ji膩n)娓€�

C.涓€娆℃渶澶х洠(ji膩n)娓€�

D.鏃ュ钩鍧囩洠(ji膩n)娓€�

80.鏍规摎(j霉)銆婃儭鑷薄鏌撶墿鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�锛屾煇鍒惰棩浼佹キ(y猫)鎺掓埃绛掓帓鏀剧敳纭唶鎳�(y墨ng)鍩�(zh铆)琛岀殑妯�(bi膩o)婧�(zh菙n)鏄�()銆�

A.銆婃儭鑷薄鏌撶墿鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�

B.銆婂ぇ姘ｆ薄鏌撶墿缍滃悎鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�

C.銆婂嵄闅虎鐗╃剼鐕掓薄鏌撴帶鍒舵(bi膩o)婧�(zh菙n)銆�

D.銆婂伐妤�(y猫)鐖愮澶ф埃姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)銆�

浠ヤ笂鍏�(n猫i)瀹规槸灏忕法鏁寸悊鐨�2019骞寸挵(hu谩n)澧冨奖闊胯⿻鍍瑰斧銆婂皫(d菐o)鍓囪垏妯�(bi膩o)婧�(zh菙n)銆嬬湡椤屽強瑙ｆ瀽71-80椤�锛�2020骞寸挵(hu谩n)澧冨奖闊胯⿻鍍瑰斧鑰冭│鍫卞悕鏅傞枔鍗冲皣鍏竷锛屽鏋滄兂鍙婃檪浜嗚В2020骞寸挵(hu谩n)澧冨奖闊胯⿻鍍瑰斧鑰冭│鍙婂牨鍚嶆檪闁�锛屽彲浠� 鍏嶈不(f猫i)闋�(y霉)绱勭煭淇℃彁閱�锛岄爯(y霉)绱勬垚鍔熶箣鍚�锛屽眴鏅傛偍灏囨渻鏀跺埌鐩搁棞(gu膩n)鐨勫厤璨�(f猫i)鑰冭│淇℃伅閫氱煡!

榛炴搳鍙笅杓�>>>2019骞寸挵(hu谩n)澧冨奖闊胯⿻鍍瑰斧銆婂皫(d菐o)鍓囪垏妯�(bi膩o)婧�(zh菙n)銆嬬湡椤屽強瑙ｆ瀽瀹屾暣鐗�

鍙冭€冪瓟妗堬細

71.C

銆愯В鏋愩€戞帓姘ｇ瓛楂樺害闄ら爤閬靛畧琛ㄥ垪鎺掓斁閫熺巼妯�(bi膩o)婧�(zh菙n)鍊煎,閭勬噳(y墨ng)楂樺嚭鍛ㄥ湇 200m 鍗婂緫鑼冨湇鐨勫缓绛� 5m 浠ヤ笂锛屼笉鑳介仈(d谩)鍒拌┎瑕佹眰鐨勬帓姘ｇ瓛,鎳�(y墨ng)鎸夊叾楂樺害灏嶆噳(y墨ng)鐨勮〃鍒楁帓鏀鹃€熺巼妯�(bi膩o)婧�(zh菙n)鍊煎毚(y谩n)鏍� 50%鍩�(zh铆)琛�銆�7.4 鏂版薄鏌撴簮鐨勬帓姘ｇ瓛涓€鑸笉鎳�(y墨ng)浣庝簬 15m銆傝嫢鏌愭柊姹℃煋婧愮殑鎺掓埃绛掑繀闋堜綆浜� 15m 鏅�,鍏舵帓鏀鹃€熺巼妯�(bi膩o)婧�(zh菙n)鍊兼寜澶栨帹瑷堢畻绲�(ji茅)鏋滃啀鍤�(y谩n)鏍� 50%鍩�(zh铆)琛屻€�

72.A

銆愯В鏋愩€戝湪鎴戝湅鐝�(xi脿n)鏈夌殑鍦嬪澶ф埃姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)楂旂郴涓�锛屾寜鐓х稖鍚堟€ф帓鏀炬(bi膩o)婧�(zh菙n)鑸囪妤�(y猫)鎬ф帓鏀炬(bi膩o)婧�(zh菙n)涓嶄氦鍙夊煼(zh铆)琛岀殑鍘熷墖锛屾湁灏堥爡鎺掓斁妯�(bi膩o)婧�(zh菙n)鐨勫煼(zh铆)琛岀浉鎳�(y墨ng)鐨勫皥闋呮帓鏀炬(bi膩o)婧�(zh菙n)锛屽叾浠栧ぇ姘ｆ薄鏌撶墿鎺掓斁鍩�(zh铆)琛屾湰妯�(bi膩o)婧�(zh菙n)銆備緥濡傦細闄ゆ湁灏堥爡閸嬬垚妯�(bi膩o)婧�(zh菙n)鐨勯崑鐖愬煼(zh铆)琛屻€婇崑鐖愬ぇ姘ｆ薄鏌撶墿鎺掓斁妯�(bi膩o)婧�(zh菙n)銆�(GB l3271—2014)锛岀伀闆诲粻鍩�(zh铆)琛屻€婄伀闆诲粻澶ф埃姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)銆�(GB 13233—2011)锛屽伐妤�(y猫)鐖愮鍩�(zh铆)琛屻€婂伐妤�(y猫)鐖愮澶ф埃姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)銆�(GB 9078—1996)锛岀厜鐒�?f脿n)t鍩�(zh铆)琛屻€婄厜鐒﹀寲瀛�(xu茅)宸ユキ(y猫)姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)銆�(GB l6171—2012)锛屾按娉ュ粻鍩�(zh铆)琛屻€婃按娉ュ伐妤�(y猫)澶ф埃姹℃煋鐗╂帓鏀炬(bi膩o)婧�(zh菙n)銆�(GB 4915—2013)銆�

73.A

銆愯В鏋愩€戠涓€椤炴薄鏌撶墿涓嶅垎琛屾キ(y猫)鍜屾薄姘存帓鏀炬柟寮�锛屼篃涓嶅垎鍙楃磵姘撮珨鍔熻兘椤炲垾锛屼竴寰嬪湪杌婇枔鎴栬粖闁撹檿鐞嗚ō(sh猫)鏂藉彛閲囨ǎ锛屽叾鏈€楂樺厑瑷辨帓鏀炬績搴﹀繀闋堢鍚堜竴瀹氳姹�銆傚畠鎸囪兘鍦ㄧ挵(hu谩n)澧冩垨鍕曟鐗╁収(n猫i)绌嶈搫锛屽皪浜洪鐢�(ch菐n)鐢熼暦閬�(yu菐n)涓嶈壇褰遍熆鐨勬薄鏌撶墿璩�(zh矛)銆�

鍏� 13 绋細绺芥睘锛岀兎鍩烘睘锛岀附閹橈紝绺介壔锛屽叚鍍归壔锛岀附鐮�锛岀附閴涳紝绺介幊锛岃嫰骞�(a)鑺�锛岀附閳�锛岀附閵€锛岀附 α 鏀惧皠鎬э紝绺� β 鏀惧皠鎬�

74.D

銆愯В鏋愩€戠涓€椤炴薄鏌撶墿鍏� 13 绋細绺芥睘锛岀兎鍩烘睘锛岀附閹�锛岀附閴�锛屽叚鍍归壔锛岀附鐮�锛岀附閴�锛岀附閹�锛岃嫰骞�(a)鑺橈紝绺介埞锛岀附閵€锛岀附α鏀惧皠鎬�锛岀附β鏀惧皠鎬�

75.C

銆愯В鏋愩€�1 閬╃敤鑼冨湇鏈(bi膩o)婧�(zh菙n)瑕�(gu墨)瀹氫簡寤虹瓚鏂藉伐鍫寸晫鐠�(hu谩n)澧冨櫔鑱叉帓鏀鹃檺鍊煎強娓噺鏂规硶锛孊 闋呭凡缍�(j墨ng)绔ｅ伐锛岄尟銆�

鏈(bi膩o)婧�(zh菙n)閬╃敤浜庡懆鍦嶆湁鍣伈鏁忔劅寤虹瓚鐗╃殑寤虹瓚鏂藉伐鍣伈鎺掓斁鐨勭鐞�銆佽⿻鍍瑰強鎺у埗锛孌 閷�銆傚競鏀裤€侀€氫俊銆佷氦閫�銆佹按鍒╃瓑鍏朵粬椤炲瀷鐨勬柦宸ュ櫔鑱叉帓鏀惧彲鍙冪収鏈(bi膩o)婧�(zh菙n)鍩�(zh铆)琛�锛孋 灏�銆傛湰妯�(bi膩o)婧�(zh菙n)涓嶉仼鐢ㄤ簬鎼朵慨銆佹惗闅柦宸ラ亷绋嬩腑鐢�(ch菐n)鐢熷櫔鑱茬殑鎺掓斁鐩�(ji膩n)绠★紝A 閷�銆�

76.C

銆愯В鏋愩€戞牴鎿�(j霉)銆婂缓绛戞柦宸ュ牬鐣岀挵(hu谩n)澧冨櫔鑱叉帓鏀炬(bi膩o)婧�(zh菙n)銆嬶紝寤虹瓚鏂藉伐閬庣▼涓牬鐣岀挵(hu谩n)澧冨櫔鑱蹭笉寰楄秴閬庤(gu墨)瀹氱殑鎺掓斁闄愬€硷細鏅濋枔 70dB锛屽闁� 55dB銆傚闁撳櫔鑱叉渶澶ц伈绱氳秴閬庨檺鍊肩殑骞呭害涓嶅緱楂樹簬 15dB(A)銆傜暥(d膩ng)鍫寸晫璺濆櫔鑱叉晱鎰熷缓绛戠墿杓冭繎锛屽叾瀹ゅ涓嶆豢瓒虫脯閲忔浠舵檪锛屽彲鍦ㄥ櫔鑱叉晱鎰熷缓绛戠墿瀹ゅ収(n猫i)娓噺锛屽苟灏囩浉鎳�(y墨ng)鐨勯檺鍊兼笡 10dB(A)浣滅偤瑭曞児渚濇摎(j霉)銆�

鏈涓�锛屽牬鐣岃窛闆㈠櫔鑱叉晱鎰熷缓绛戠墿杓冭繎锛屽湪瀹ゅ収(n猫i)娓噺锛屾(bi膩o)婧�(zh菙n)闄愬€兼笡鍘� 10dB(A)浣滅偤绛夋晥鑱茬礆瑭曞児渚濇摎(j霉)锛屽嵆鏅濋枔绛夋晥鑱茬礆妯�(bi膩o)婧�(zh菙n)闄愬€肩偤 70-10=60dB(A)锛屾晠鏅濋枔绛夋晥鑱茬礆瓒呮(bi膩o);澶滈枔妯�(bi膩o)婧�(zh菙n)闄愬€肩偤55-10=45dB(A)锛屽闁撴渶澶ц伈绱氳秴閬庨檺鍊肩殑骞呭害涓嶅緱楂樹簬 15dB(A)锛屽嵆 60dB(A)锛屾晠澶滈枔鏈€

77.C

銆愯В鏋愩€戜竴鑸儏娉佷笅锛屾脯榛為伕鍦ㄥ伐妤�(y猫)浼佹キ(y猫)寤犵晫澶� 1m銆侀珮搴� 1.2m 浠ヤ笂銆佽窛浠讳竴鍙嶅皠闈㈣窛闆笉灏忎簬1m 鐨勪綅缃�(5.3.2)銆傜暥(d膩ng)寤犵晫鏈夊湇澧讳笖鍛ㄥ湇鏈夊彈褰遍熆鐨勫櫔鑱叉晱鎰熷缓绛戠墿鏅�锛屾脯榛炴噳(y墨ng)閬稿湪寤犵晫澶� 1 m銆侀珮浜庡湇澧� 0.5 m 浠ヤ笂鐨勪綅缃�銆傜暥(d膩ng)寤犵晫鐒℃硶娓噺鍒拌伈婧愮殑瀵﹂殯鎺掓斁鐙€娉佹檪(濡傝伈婧愪綅浜庨珮绌�銆佸粻鐣岃ō(sh猫)鏈夎伈灞忛殰绛�)锛屾噳(y墨ng)鎸� 5.3.2 瑷�(sh猫)缃脯榛�锛屽悓鏅傚湪鍙楀奖闊跨殑鍣伈鏁忔劅寤虹瓚鐗╂埗澶� 1 m 铏曞彟瑷�(sh猫)娓粸銆傚鍏�(n猫i)鍣伈娓噺鏅�锛屽鍏�(n猫i)娓噺榛炰綅瑷�(sh猫)鍦ㄨ窛浠讳竴鍙嶅皠闈㈣嚦灏� 0.5 m 浠ヤ笂銆佽窛鍦伴潰 1.2 m 楂樺害铏�锛屽湪鍙楀櫔鑱插奖闊挎柟鍚戠殑绐楁埗闁嬪暉鐙€鎱�(t脿i)涓嬫脯閲忋€�

78.B

銆愯В鏋愩€�5.7 娓噺绲�(ji茅)鏋滀慨姝�

5.7.1 鍣伈娓噺鍊艰垏鑳屾櫙鍣伈鍊肩浉宸ぇ浜� 10 dB(A)鏅�锛屽櫔鑱叉脯閲忓€间笉鍋氫慨姝�銆�

5.7.2 鍣伈娓噺鍊艰垏鑳屾櫙鍣伈鍊肩浉宸湪 3~ 10 dB(A)涔嬮枔鏅�锛屽櫔鑱叉脯閲忓€艰垏鑳屾櫙鍣伈鍊肩殑宸€煎彇鏁村悗锛屾寜琛� 4 閫�(j矛n)琛屼慨姝�銆�67dB-63dB=4dB锛岀敱琛ㄥ彲鐭ュ彇-2dB

79.C

銆愯В鏋愩€�5.1 鎺掓薄鍠綅鎺掓斁(鍖呮嫭娉勬紡鍜岀劇绲勭箶鎺掓斁)鐨勬儭鑷薄鏌撶墿,鍦ㄦ帓姹″柈浣嶉倞鐣屼笂瑕�(gu墨)瀹氱洠(ji膩n)娓粸(鐒″叾浠栧共鎿惧洜绱�)鐨勪竴娆℃渶澶х洠(ji膩n)娓€�(鍖呮嫭鑷埃娉曞害)蹇呴爤浣庝簬鎴栫瓑浜庢儭鑷薄鏌撶墿寤犵晫妯�(bi膩o)婧�(zh菙n)鍊�銆�

80.A

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