A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct （）.

[单选题]A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct （）.A . expansion ratioB . pressure ratioC . compression ratioD . clearance ratio

[单选题]A distance piece, known as a （） may be interposed between the rod and the bearing housing.A . bearing shellB . bearing linerC . compression plateD . lead wire

[名词解释] ground substance (基质)

[名词解释] 分泌片（secretory piece）

[名词解释] 特性曲character piece

[单选题]One of the problems Wagoner faces is______.（ ）[A] to fight for a favorable term for the employees' health benefits[B] to start an advertising campaign to promote sales of GM's cars[C] to eliminate GM's old crop of cars that people don't want to b

[单选题]A．nna was reading a piece of science fiction, completely ________ to the outside world.[A] being lost[B] having lost[C] losing[D] lost

[试题]Anna was reading a piece of science fiction, 怎么选择A．nnawasreadingapieceofsciencefiction,completely_______totheoutsideworld.A．)havingbeenlostB)tobelostC)losingD)lost

[单选题]A single piece（） fitted with bronze rings guides the piston in the cylinder liner.A . piston skirtB . piston crownC . guide wayD . cross-head

[单选题]I found him ______on the ground.A． lieB． lyingC． layD． to lie