鐗╃悊澶囪澶у笀
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澶囪澶у笀
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9
闂ㄣ�戯細鍏嶆敞鍐岋紝涓嶆敹璐癸紒
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娑蹭綋鐨勫帇寮?/p>
瀛︽牎锛?/p>
濮撳悕锛?/p>
鐝?/p>
绾э細
鑰冨彿锛?/p>
璇勫嵎浜?/p>
寰楀垎
涓�銆佸崟閫夐
1.
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,
灏嗗帇寮鸿
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褰㈢涓殑娑查潰鐩稿钩
)
鎻掑叆涓ょ娑蹭綋鍐呴儴
,
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鐩稿悓
,
鍒欎袱绉嶆恫浣撶殑瀵嗗害
蟻
1
,
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涓?/p>
(
).
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蟻
1
=
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1
>
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C.
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,
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2.
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A
鍜?/p>
B
,
A
鐞冨鍦ㄤ竴涓ぇ婕忔枟涓嬫柟
,
B
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,
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,
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A
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B.
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B
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涓ゆ皵鐞冩定鐮寸殑鍙兘鎬х浉鍚?/p>
D.
鏃犳硶鍒?/p>
鏂?/p>
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,
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鑻ユ煇浣嶆綔姘村憳
鑳芥壙鍙楁按浜х敓鐨勬渶澶у帇寮轰负
4.0
脳
10
5
Pa,
姘寸殑瀵嗗害涓?/p>
1.0
脳
10
3
kg/m
3
(
g
鍙?/p>
10
N
/
kg),
鍒欒
娼滄按鍛樺湪姘翠腑鑳戒笅娼滅殑鏈�澶ф繁搴︽槸
(
).
A. 4
m
B. 40
m
C.
400
m
D. 60
m
4.
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,
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閰掔簿
(
蟻
姘?/p>
>
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),
鍙兘浣挎按鍜岄厭绮惧瀹瑰櫒搴曢儴鐨勫帇寮虹浉绛夌殑鏂规硶鏄?/p>
(
).