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【单选题】
太阳能电池的转换效率低,产生原因不可能是:
A.
光照不完全在电池上;
B.
光谱频率分布广;
C.
电池发热;
D.
光照时间太少;
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参考答案:
举一反三
【单选题】To get a pay raise, a person should ________.
A.
advertise himself on the job market
B.
persuade his boss to sign a long-term contract
C.
C) try to get inside information about the organization
D.
D) do something to impress his boss just before merit pay decisions
【单选题】If I don't _____ for that job, bang goes my holiday in France. [     ]
A.
get pay
B.
get paid
C.
get to pay
D.
get paying
【单选题】各专业工作队按照一定的施工顺序投入施工,各专业工作队在各施工对象上连续、有节奏地施工,并作最大限度搭接的施工组织方式是:
A.
依次施工
B.
平行施工
C.
搭接施工
D.
流水施工
【单选题】The speaker had to get his voice ________ so as to make himself ________. [      ]
A.
risen; hearing
B.
raised; hearing
C.
raised; heard
D.
arisen; heard
【单选题】To get a pay raise, a person should_____________.
A.
advertise himself on the job market
B.
persuade his boss to sign a long-term contract
C.
try to get inside information about the organization
D.
do something to impress his bossjust before merit pay decisions
【判断题】内存储器是CPU能够直接访问的存储器,用于存放正在运行的程序和数据。A. 是 B. 错
A.
正确
B.
错误
【简答题】仙人掌生活在缺水的沙漠中,在仙人掌细胞中含量最多的有机物是( ) A.水 B.蛋白质 C.脂质 D.糖类 2.下列关于微量元素的叙述,错误的是 ( ) A.微量元素是细胞中含量很少的元素 B.微量元素的含量越多对生物体的生命活动就越有利 C.微量元素是维持正常生命活动不可缺少的元素 D.Mn、B、Mo都属于微量元素 3.人是杂食动物,通过摄入动植物及其产物来获得化合物和元素,则人体...
【单选题】He had wanted a 25% raise in pay, but after talking to his boss, he decided that a 5% raise would have to______.
A.
suffice
B.
satisfy
C.
gratify
D.
delight
【判断题】对心曲柄滑块机构没有急回特性。
A.
正确
B.
错误
【简答题】无论哪一种继承权限,其基类的________成员均不能为派生类所继承。
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