搅拌器试车前，应检查其冷却水系统（）。
A、进出口管线连接正确
B、已通入冷却水
C、无泄漏
D、无异音
参考答案：A, B, C
埃及和新加坡经济发展共同的优势是[ ]
A、地理位置优越
B、自然资源丰富
C、国土面积广大
D、人口素质较高
He slipped and had his leg broken. _____, he will have to be away from school for two
or three months. [ ]
A. In any case
B. After all
C. As a result
D. In this way
