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【判断题】
装备ABS系统的车辆,一旦发现存在影响系统正常工作的故障将自动关闭ABS,此时,汽车的制动系统将不起作用。A.
正确
B.
错误
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【单选题】Researchers have studied the poor as individuals, as families and households, as members of poor communities, neighborhoods and regions, as products of larger poverty-creating structures. They have be...
A.
they are also members of the same society as the poor
B.
they play an important role in creating and reproducing poverty
C.
solution of the poverty problem is at their mercy
D.
they know the living conditions of the poor better than other groups
【单选题】血红蛋白测定的参考方法为
A.
氰化高铁血红蛋白测定法
B.
十二烷基硫酸钠血红蛋白测定法
C.
沙利酸化血红蛋白测定法
D.
叠氮高铁血红蛋白测定法
E.
碱羟血红蛋白测定法
【单选题】Not until he saw the red light _____his car. A. he stopped B. that he stopped C. did he stop D. he had stopped
A.
1
B.
2
C.
3
D.
4
【单选题】Not until he saw the green light _______ his car.
A.
he started
B.
that he started
C.
did he start
D.
he has started
【简答题】现有下列仪器和装置： （1）仪器A的名称是______，仪器B的名称是______． （2）仪器C的用途是______． （3）实验室制氧气的气体发生装置是______（填序号）． （4）实验室收集二氧化碳气体的装置通常选用______（填序号）．
【简答题】甲企业的产品组合为 3 种洗衣粉、4 种香皂、5 种纸巾和 6 种洗发水,共 18 种产品。目前,乙企业生产的洗衣粉产品已经占有了原属甲企业的部分市场。为此,甲企业决定采取措施改变洗衣粉产品的形象,使顾客对其产品建立新的认识。同时,甲企业拟生产一种新型香皂,总固定成本为 200 万元,每块香皂可变成本为 2 元,每块香皂目标价格为 4 元。新型香皂推出后,甲企业建立了分销渠道,首先通过代理商将产品...
【单选题】Not until he saw the green light ____ his car.
A.
he started
B.
he has started
C.
that he started
D.
did he start
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