在掘进工作面斜巷运输管理上应防止违章行为是，超过规定数量拉放车，趴、蹬、跳车。
参考答案：对
Seeing the enemy, Gary was behaving as though nothing ______.[ ]
A. happened
B. had happened
C. would happen
D. was happening
P-207抽空原因有塔底液位低，（），粘度大，泵密封漏气和C-203真空度大。
