糖酵解的关键酶是
A．乳酸脱氢酶
B．丙酮酸脱氢酶
C．磷酸甘油酸脱氢酶
D．磷酸果糖激酶-1
E．3-磷酸甘油醛脱氢酶
参考答案：D
After the flood, what the local government did first was to provide _____ for the homeless families．
A．furniture
B．occupation
C．equipment
D．accommodation
控制电缆与控制电缆之间的间距，不应小于（）。
A、20mm
B、50mm
C、80mm
D、100mm
