【单选题】【消耗次数：1】
成人摄入脂肪的能量占总能量的比例为? ? ? ? ? ? ? ? ?合适。
①
10%~20%
②
20%~30%
③
25%~35%
④
30%~40%
参考答案：
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【单选题】
中国居民膳食指南首条建议一般成人每天摄入谷物的数量及其所提供的能量占膳食总能量比例分别为
①
200-350克,1/3~1/2以上
②
100-200克,1/3以上
③
250-400克,1/2以上
④
300-400克,3/4以上
【单选题】
已知四点A（10、20、30）、B（30、20、10）、C（10、20、10）、D（20、20、30），则对H面的重影点为______。
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
A与D，D点可见
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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B与C，B点可见
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
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A与C，A点可见
④
Normal
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7.8 磅
0
2
false
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false
EN-US
ZH-CN
X-NONE
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A与C，C点可见
【单选题】
A点坐标为（10、20、30），B点坐标为（30、20、30）则AB距离为______。
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
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正垂线
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
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mso-tstyle-colband-size:0;
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mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
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font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
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mso-ascii-theme-font:minor-latin;
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mso-font-kerning:1.0pt;}
侧垂线
③
Normal
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7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
正平线
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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font-size:10.5pt;
mso-bidi-font-size:11.0pt;
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mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
铅垂线
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