不属于汽提塔淹塔原因的是()。
A.塔底液控阀失灵
B.塔底液面失控
C.蒸汽压力高
D.蒸汽压力低
参考答案:C
根据句意,补全单词。
1. I hope to pass the____exam.
2. They look____,but in fact they are difficult.
3. The exam is ,so let's all go for it !
4. For____,this is a verb "to help out".
5. I'm looking forward to____to senior high school.
吊运熔化或炽热金属的钢丝绳,必须采用()的钢丝绳。
A、纤维芯
B、金属芯
C、混合芯
D、钢丝芯