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【单选题】
某建筑室内消火栓系统采用SN65mm的消火栓,水龙带长度25m,若水带弯曲折减系数为0.9,水枪充实水柱长度为10m,则消火栓的保护半径为 m。A.
35.0
B.
32.5
C.
32.1
D.
29.6
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【多选题】草麻黄粉末特征可见（ ）。
A.
气孔特异，保卫细胞侧面观呈哑铃形或电话听筒形
B.
纤维壁厚，壁上附有众多细小的砂晶
C.
纤维壁厚，壁上附有众多细小的砂晶，形成晶纤维
D.
薄壁细胞中有不规则红棕色块状物
E.
薄壁细胞中有亮黄色簇状结晶
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A.
To advertise a new film To Be or Not to Be.
B.
To inform people that a film will not be shown.
C.
To discuss the characters in To Be or Not to Be.
D.
To discuss William Shakespeare's life.
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