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【单选题】
已知某挖土机挖土的一次正常循环工作时间是2min，每循环工作一次挖土0．5m3，工作班的延续时间为8h，机械正常利用系数为0．8，则其产量定额为（ ）m3／。A.
96
B.
120
C.
150
D.
300
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列叙述中,不能表示σ键的特点的是
A.
原子轨道沿键轴方向重叠，重叠部分沿键轴方向成圆柱形对称
B.
两原子核之间的电子云密度最大
C.
键的强度通常比π键大
D.
键的长度通常比π键长
【单选题】Identify the INCORRECT statement about environmental regulations.
A.
Environmental regulations are often lacking in developing nations.
B.
Environmental regulations are similar across developed and developing nations.
C.
Developed nations have substantial regulations governing the emission of pollutants, the dumping of toxic chemicals, and so on.
D.
Inferior environmental regulations in host nations, as compared to home nation, can lead to ethical issues.
【简答题】The new regulations for the sector ____________ (即将实施).
【单选题】某患者,近3个月出现烦渴、多尿,尿糖检测呈阳性。此患者可出现
A.
血浆胶体渗透压降低
B.
肾血流量升高
C.
血管升压素释放减少
D.
肾小球滤过率升高
E.
醛固酮分泌减少
【单选题】_________ in the regulations that you should not tell other people the password of your e-mail account.
A.
What is required
B.
What requires
C.
It is required
D.
It requires
【单选题】Identify the INCORRECT statement about environmental regulations
A.
Environmental regulations are often lacking in developing nations
B.
Environmental regulations are similar across developed and developing nations.
C.
Developed nations have substantial regulations governing the emission of pollutants, the dumping of toxic chemicals, etc.
D.
Inferior environmental regulations in host nations, as compared to home nation, can lead to ethical issues.
【单选题】某患者,近3个月出现烦渴、多尿,尿糖检测呈阳性。此患者可出现
A.
血浆胶体渗透压降低
B.
肾血流量升高
C.
血管升压素释放减少
D.
肾小管渗透浓度升高
E.
醛固酮分泌减少
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