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【单选题】
金属材料的力学性能指标有强度、()、硬度、冲击韧性、疲劳强度等。
A.
塑性
B.
软性
C.
弹性
D.
脆性
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【判断题】武夷岩茶按产区不同划分为正岩、半岩和洲茶。
A.
正确
B.
错误
【单选题】Samara's income is $30 a month and she spends all of it on music downloads and gasoline. The price of a music download is $3 and the price of a gallon of gasoline is $3. At Samara's best affordable po...
A.
0.5
B.
1
C.
1.5
D.
More information is needed to determine the marginal rate of substitution.
【单选题】The table above shows the situation in the gasoline market in Tulsa, Oklahoma. If the price of a gallon of gasoline is $3.73, then
A.
there is a surplus of gasoline in Tulsa.
B.
there is a shortage of gasoline in Tulsa.
C.
the gasoline market in Tulsa is in equilibrium.
D.
without more information we cannot determine if there is a surplus, a shortage, or an equilibrium in the gasoline market in Tulsa.
E.
there is neither a surplus nor a shortage, but the market is NOT in equilibrium.
【判断题】A gallon of gasoline weighs 6 pounds.
A.
正确
B.
错误
【单选题】属于亚硝基尿类的抗肿瘤药物是。
A.
环磷酰胺。
B.
噻替派
C.
卡莫斯汀。
D.
白消安
E.
顺铂
【简答题】仔细阅读下列资料,并根据资料对答问题: 不同状态下的菠菜 维生素C(mg/kg) 新鲜菠菜 89.0 微波处理菠菜(中火2分钟) 74.9 水煮菠菜(沸水1分钟) 56.6 请你选用下列所提供的材料用具,设计实验方案,检验上述资料结果是否正确。 材料用具:新鲜菠菜,高锰酸钾溶液,清水,微波炉,酒精灯,研钵(用于研磨),试管,烧杯,滴管。 提示:在没有专门的检测仪器的条件下,你无法得到上述数据,但可...
【单选题】What is your friend"s family name if his full name is James Allen Green?
A.
James
B.
Allen
C.
Green
D.
James Allen 【答案】 C
【简答题】恶性肿瘤是一种严重威胁人类健康的常见病和多发病,人类因恶性肿瘤而引起的死亡率居所有疾病死亡率的第2位,仅次于心脑血管疾病。氮芥类药物属于A、烷化剂 B、抗代谢药物 C、抗肿瘤抗生素 D、天然抗肿瘤药物 E、金属铂类抗肿瘤药物 半合成得到的紫杉烷类抗肿瘤药是A、长春瑞滨 B、多西他赛 C、奥沙利铂 D、吉西他滨 E、去氧氟尿苷 具有亚硝基脲结构的是A、美 B、巯嘌呤 C、塞替派 D、卡莫司汀 E...
【判断题】历史上的武夷岩茶,按茶叶生长的环境不同(山谷、溪壑边)将产区划分为正岩、半岩和洲茶。
A.
正确
B.
错误
【单选题】The table above shows the situation in the gasoline market in Tulsa, Oklahoma. If the price of a gallon of gasoline is $3.62, then
A.
there is a surplus of gasoline in Tulsa.
B.
there is a shortage of gasoline in Tulsa.
C.
the gasoline market in Tulsa is in equilibrium.
D.
without more information we cannot determine if there is a surplus, a shortage, or an equilibrium in the gasoline market in Tulsa.
E.
there is neither a surplus nor a shortage, but the market is NOT in equilibrium.
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