[单选] With reference to a two ram actuating mechanism, which one of the following statement is false?（）
A . The rams work inside cylinders B . The cylinders have glands sealing their open ends C . The rams are connected to a cross-head D . The cross-head is mounted on the rudder stock
投标报价时，不可以参与竞争的费用有哪些？
60―70年代香港的女性作家有（） 亦舒。 林艳妮。 岑凯伦。 梁凤仪。
战勤保障大队防静电服储备数量为5套。
战勤保障大队防化手套储备数量为20付。
战勤保障大队消防防化服储备数量为20套。
With reference to a two ram actuating mechanism, which one of the following statement is false?（）
