梁底模一般厚（），下面用顶撑支撑，间距（）左右。

Though__ __ came that he was completely defeated, he didn't lose ______.

A．the word; his heart

B．the word; heart

C．word; his heart

D．word; heart

_____I saw the West Lake, I was struck by its beauty.

A．The first time

B．For some time

C．For the first time

D．At the first time

如图所示，猎人非法猎猴，用两根轻绳将猴子悬于空中，猴子处于静止状态。以下相关说法正确的是[    ]

A．地球对猴子的引力与猴子对地球的引力是一对作用力和反作用力

B．绳拉猴子的力和猴子拉绳的力相互平衡

C．猴子受到四个力的作用

D．人将绳子拉得越紧，猴子受到的合力越大

铝热焊焊接的钢轨焊缝容易产生的缺陷有气孔，夹杂（渣）裂纹外，还应特别注意，面积型疏松、（）缩孔和未焊合等缺陷。

慢性肾衰竭时，钙和磷的代谢障碍为

A．血磷升高，血钙升高
B．血磷降低，血钙降低
C．血磷升高，血钙正常
D．血磷升高，血钙降低
E．血磷降低，血钙升高