对于明杆式闸阀，闸板启闭时阀杆将（）。
A．随之升降
B．只旋转不升降
C．既升降又旋转
D．不动
参考答案：A
冷却塔补充水量，应考虑蒸发损失水量、风吹损失水量和排污损失水量，一般按循环水量的()计算。
A．3％～5％
B．2％～5％
C．4％～6％
D．2％～6％
—What does she look like?
— She ____ of medium build and ____ long straight black hair. [ ]
A. is; is
B. has; is
C. is; has
D. has; has
